1 /* Intel PRO/1000 Linux driver
2 * Copyright(c) 1999 - 2014 Intel Corporation.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * The full GNU General Public License is included in this distribution in
14 * the file called "COPYING".
16 * Contact Information:
17 * Linux NICS <linux.nics@intel.com>
18 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
19 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
22 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24 #include <linux/module.h>
25 #include <linux/types.h>
26 #include <linux/init.h>
27 #include <linux/pci.h>
28 #include <linux/vmalloc.h>
29 #include <linux/pagemap.h>
30 #include <linux/delay.h>
31 #include <linux/netdevice.h>
32 #include <linux/interrupt.h>
33 #include <linux/tcp.h>
34 #include <linux/ipv6.h>
35 #include <linux/slab.h>
36 #include <net/checksum.h>
37 #include <net/ip6_checksum.h>
38 #include <linux/ethtool.h>
39 #include <linux/if_vlan.h>
40 #include <linux/cpu.h>
41 #include <linux/smp.h>
42 #include <linux/pm_qos.h>
43 #include <linux/pm_runtime.h>
44 #include <linux/aer.h>
45 #include <linux/prefetch.h>
49 #define DRV_EXTRAVERSION "-k"
51 #define DRV_VERSION "2.3.2" DRV_EXTRAVERSION
52 char e1000e_driver_name
[] = "e1000e";
53 const char e1000e_driver_version
[] = DRV_VERSION
;
55 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
56 static int debug
= -1;
57 module_param(debug
, int, 0);
58 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
60 static const struct e1000_info
*e1000_info_tbl
[] = {
61 [board_82571
] = &e1000_82571_info
,
62 [board_82572
] = &e1000_82572_info
,
63 [board_82573
] = &e1000_82573_info
,
64 [board_82574
] = &e1000_82574_info
,
65 [board_82583
] = &e1000_82583_info
,
66 [board_80003es2lan
] = &e1000_es2_info
,
67 [board_ich8lan
] = &e1000_ich8_info
,
68 [board_ich9lan
] = &e1000_ich9_info
,
69 [board_ich10lan
] = &e1000_ich10_info
,
70 [board_pchlan
] = &e1000_pch_info
,
71 [board_pch2lan
] = &e1000_pch2_info
,
72 [board_pch_lpt
] = &e1000_pch_lpt_info
,
75 struct e1000_reg_info
{
80 static const struct e1000_reg_info e1000_reg_info_tbl
[] = {
81 /* General Registers */
83 {E1000_STATUS
, "STATUS"},
84 {E1000_CTRL_EXT
, "CTRL_EXT"},
86 /* Interrupt Registers */
91 {E1000_RDLEN(0), "RDLEN"},
92 {E1000_RDH(0), "RDH"},
93 {E1000_RDT(0), "RDT"},
95 {E1000_RXDCTL(0), "RXDCTL"},
97 {E1000_RDBAL(0), "RDBAL"},
98 {E1000_RDBAH(0), "RDBAH"},
100 {E1000_RDFT
, "RDFT"},
101 {E1000_RDFHS
, "RDFHS"},
102 {E1000_RDFTS
, "RDFTS"},
103 {E1000_RDFPC
, "RDFPC"},
106 {E1000_TCTL
, "TCTL"},
107 {E1000_TDBAL(0), "TDBAL"},
108 {E1000_TDBAH(0), "TDBAH"},
109 {E1000_TDLEN(0), "TDLEN"},
110 {E1000_TDH(0), "TDH"},
111 {E1000_TDT(0), "TDT"},
112 {E1000_TIDV
, "TIDV"},
113 {E1000_TXDCTL(0), "TXDCTL"},
114 {E1000_TADV
, "TADV"},
115 {E1000_TARC(0), "TARC"},
116 {E1000_TDFH
, "TDFH"},
117 {E1000_TDFT
, "TDFT"},
118 {E1000_TDFHS
, "TDFHS"},
119 {E1000_TDFTS
, "TDFTS"},
120 {E1000_TDFPC
, "TDFPC"},
122 /* List Terminator */
127 * __ew32_prepare - prepare to write to MAC CSR register on certain parts
128 * @hw: pointer to the HW structure
130 * When updating the MAC CSR registers, the Manageability Engine (ME) could
131 * be accessing the registers at the same time. Normally, this is handled in
132 * h/w by an arbiter but on some parts there is a bug that acknowledges Host
133 * accesses later than it should which could result in the register to have
134 * an incorrect value. Workaround this by checking the FWSM register which
135 * has bit 24 set while ME is accessing MAC CSR registers, wait if it is set
136 * and try again a number of times.
138 s32
__ew32_prepare(struct e1000_hw
*hw
)
140 s32 i
= E1000_ICH_FWSM_PCIM2PCI_COUNT
;
142 while ((er32(FWSM
) & E1000_ICH_FWSM_PCIM2PCI
) && --i
)
148 void __ew32(struct e1000_hw
*hw
, unsigned long reg
, u32 val
)
150 if (hw
->adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
153 writel(val
, hw
->hw_addr
+ reg
);
157 * e1000_regdump - register printout routine
158 * @hw: pointer to the HW structure
159 * @reginfo: pointer to the register info table
161 static void e1000_regdump(struct e1000_hw
*hw
, struct e1000_reg_info
*reginfo
)
167 switch (reginfo
->ofs
) {
168 case E1000_RXDCTL(0):
169 for (n
= 0; n
< 2; n
++)
170 regs
[n
] = __er32(hw
, E1000_RXDCTL(n
));
172 case E1000_TXDCTL(0):
173 for (n
= 0; n
< 2; n
++)
174 regs
[n
] = __er32(hw
, E1000_TXDCTL(n
));
177 for (n
= 0; n
< 2; n
++)
178 regs
[n
] = __er32(hw
, E1000_TARC(n
));
181 pr_info("%-15s %08x\n",
182 reginfo
->name
, __er32(hw
, reginfo
->ofs
));
186 snprintf(rname
, 16, "%s%s", reginfo
->name
, "[0-1]");
187 pr_info("%-15s %08x %08x\n", rname
, regs
[0], regs
[1]);
190 static void e1000e_dump_ps_pages(struct e1000_adapter
*adapter
,
191 struct e1000_buffer
*bi
)
194 struct e1000_ps_page
*ps_page
;
196 for (i
= 0; i
< adapter
->rx_ps_pages
; i
++) {
197 ps_page
= &bi
->ps_pages
[i
];
200 pr_info("packet dump for ps_page %d:\n", i
);
201 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_ADDRESS
,
202 16, 1, page_address(ps_page
->page
),
209 * e1000e_dump - Print registers, Tx-ring and Rx-ring
210 * @adapter: board private structure
212 static void e1000e_dump(struct e1000_adapter
*adapter
)
214 struct net_device
*netdev
= adapter
->netdev
;
215 struct e1000_hw
*hw
= &adapter
->hw
;
216 struct e1000_reg_info
*reginfo
;
217 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
218 struct e1000_tx_desc
*tx_desc
;
223 struct e1000_buffer
*buffer_info
;
224 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
225 union e1000_rx_desc_packet_split
*rx_desc_ps
;
226 union e1000_rx_desc_extended
*rx_desc
;
236 if (!netif_msg_hw(adapter
))
239 /* Print netdevice Info */
241 dev_info(&adapter
->pdev
->dev
, "Net device Info\n");
242 pr_info("Device Name state trans_start last_rx\n");
243 pr_info("%-15s %016lX %016lX %016lX\n", netdev
->name
,
244 netdev
->state
, netdev
->trans_start
, netdev
->last_rx
);
247 /* Print Registers */
248 dev_info(&adapter
->pdev
->dev
, "Register Dump\n");
249 pr_info(" Register Name Value\n");
250 for (reginfo
= (struct e1000_reg_info
*)e1000_reg_info_tbl
;
251 reginfo
->name
; reginfo
++) {
252 e1000_regdump(hw
, reginfo
);
255 /* Print Tx Ring Summary */
256 if (!netdev
|| !netif_running(netdev
))
259 dev_info(&adapter
->pdev
->dev
, "Tx Ring Summary\n");
260 pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n");
261 buffer_info
= &tx_ring
->buffer_info
[tx_ring
->next_to_clean
];
262 pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n",
263 0, tx_ring
->next_to_use
, tx_ring
->next_to_clean
,
264 (unsigned long long)buffer_info
->dma
,
266 buffer_info
->next_to_watch
,
267 (unsigned long long)buffer_info
->time_stamp
);
270 if (!netif_msg_tx_done(adapter
))
271 goto rx_ring_summary
;
273 dev_info(&adapter
->pdev
->dev
, "Tx Ring Dump\n");
275 /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
277 * Legacy Transmit Descriptor
278 * +--------------------------------------------------------------+
279 * 0 | Buffer Address [63:0] (Reserved on Write Back) |
280 * +--------------------------------------------------------------+
281 * 8 | Special | CSS | Status | CMD | CSO | Length |
282 * +--------------------------------------------------------------+
283 * 63 48 47 36 35 32 31 24 23 16 15 0
285 * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
286 * 63 48 47 40 39 32 31 16 15 8 7 0
287 * +----------------------------------------------------------------+
288 * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
289 * +----------------------------------------------------------------+
290 * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
291 * +----------------------------------------------------------------+
292 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
294 * Extended Data Descriptor (DTYP=0x1)
295 * +----------------------------------------------------------------+
296 * 0 | Buffer Address [63:0] |
297 * +----------------------------------------------------------------+
298 * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
299 * +----------------------------------------------------------------+
300 * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
302 pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n");
303 pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n");
304 pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n");
305 for (i
= 0; tx_ring
->desc
&& (i
< tx_ring
->count
); i
++) {
306 const char *next_desc
;
307 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
308 buffer_info
= &tx_ring
->buffer_info
[i
];
309 u0
= (struct my_u0
*)tx_desc
;
310 if (i
== tx_ring
->next_to_use
&& i
== tx_ring
->next_to_clean
)
311 next_desc
= " NTC/U";
312 else if (i
== tx_ring
->next_to_use
)
314 else if (i
== tx_ring
->next_to_clean
)
318 pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n",
319 (!(le64_to_cpu(u0
->b
) & (1 << 29)) ? 'l' :
320 ((le64_to_cpu(u0
->b
) & (1 << 20)) ? 'd' : 'c')),
322 (unsigned long long)le64_to_cpu(u0
->a
),
323 (unsigned long long)le64_to_cpu(u0
->b
),
324 (unsigned long long)buffer_info
->dma
,
325 buffer_info
->length
, buffer_info
->next_to_watch
,
326 (unsigned long long)buffer_info
->time_stamp
,
327 buffer_info
->skb
, next_desc
);
329 if (netif_msg_pktdata(adapter
) && buffer_info
->skb
)
330 print_hex_dump(KERN_INFO
, "", DUMP_PREFIX_ADDRESS
,
331 16, 1, buffer_info
->skb
->data
,
332 buffer_info
->skb
->len
, true);
335 /* Print Rx Ring Summary */
337 dev_info(&adapter
->pdev
->dev
, "Rx Ring Summary\n");
338 pr_info("Queue [NTU] [NTC]\n");
339 pr_info(" %5d %5X %5X\n",
340 0, rx_ring
->next_to_use
, rx_ring
->next_to_clean
);
343 if (!netif_msg_rx_status(adapter
))
346 dev_info(&adapter
->pdev
->dev
, "Rx Ring Dump\n");
347 switch (adapter
->rx_ps_pages
) {
351 /* [Extended] Packet Split Receive Descriptor Format
353 * +-----------------------------------------------------+
354 * 0 | Buffer Address 0 [63:0] |
355 * +-----------------------------------------------------+
356 * 8 | Buffer Address 1 [63:0] |
357 * +-----------------------------------------------------+
358 * 16 | Buffer Address 2 [63:0] |
359 * +-----------------------------------------------------+
360 * 24 | Buffer Address 3 [63:0] |
361 * +-----------------------------------------------------+
363 pr_info("R [desc] [buffer 0 63:0 ] [buffer 1 63:0 ] [buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] [bi->skb] <-- Ext Pkt Split format\n");
364 /* [Extended] Receive Descriptor (Write-Back) Format
366 * 63 48 47 32 31 13 12 8 7 4 3 0
367 * +------------------------------------------------------+
368 * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
369 * | Checksum | Ident | | Queue | | Type |
370 * +------------------------------------------------------+
371 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
372 * +------------------------------------------------------+
373 * 63 48 47 32 31 20 19 0
375 pr_info("RWB[desc] [ck ipid mrqhsh] [vl l0 ee es] [ l3 l2 l1 hs] [reserved ] ---------------- [bi->skb] <-- Ext Rx Write-Back format\n");
376 for (i
= 0; i
< rx_ring
->count
; i
++) {
377 const char *next_desc
;
378 buffer_info
= &rx_ring
->buffer_info
[i
];
379 rx_desc_ps
= E1000_RX_DESC_PS(*rx_ring
, i
);
380 u1
= (struct my_u1
*)rx_desc_ps
;
382 le32_to_cpu(rx_desc_ps
->wb
.middle
.status_error
);
384 if (i
== rx_ring
->next_to_use
)
386 else if (i
== rx_ring
->next_to_clean
)
391 if (staterr
& E1000_RXD_STAT_DD
) {
392 /* Descriptor Done */
393 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n",
395 (unsigned long long)le64_to_cpu(u1
->a
),
396 (unsigned long long)le64_to_cpu(u1
->b
),
397 (unsigned long long)le64_to_cpu(u1
->c
),
398 (unsigned long long)le64_to_cpu(u1
->d
),
399 buffer_info
->skb
, next_desc
);
401 pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n",
403 (unsigned long long)le64_to_cpu(u1
->a
),
404 (unsigned long long)le64_to_cpu(u1
->b
),
405 (unsigned long long)le64_to_cpu(u1
->c
),
406 (unsigned long long)le64_to_cpu(u1
->d
),
407 (unsigned long long)buffer_info
->dma
,
408 buffer_info
->skb
, next_desc
);
410 if (netif_msg_pktdata(adapter
))
411 e1000e_dump_ps_pages(adapter
,
418 /* Extended Receive Descriptor (Read) Format
420 * +-----------------------------------------------------+
421 * 0 | Buffer Address [63:0] |
422 * +-----------------------------------------------------+
424 * +-----------------------------------------------------+
426 pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n");
427 /* Extended Receive Descriptor (Write-Back) Format
429 * 63 48 47 32 31 24 23 4 3 0
430 * +------------------------------------------------------+
432 * 0 +-------------------+ Rsvd | Reserved | MRQ RSS |
433 * | Packet | IP | | | Type |
434 * | Checksum | Ident | | | |
435 * +------------------------------------------------------+
436 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
437 * +------------------------------------------------------+
438 * 63 48 47 32 31 20 19 0
440 pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n");
442 for (i
= 0; i
< rx_ring
->count
; i
++) {
443 const char *next_desc
;
445 buffer_info
= &rx_ring
->buffer_info
[i
];
446 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
447 u1
= (struct my_u1
*)rx_desc
;
448 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
450 if (i
== rx_ring
->next_to_use
)
452 else if (i
== rx_ring
->next_to_clean
)
457 if (staterr
& E1000_RXD_STAT_DD
) {
458 /* Descriptor Done */
459 pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n",
461 (unsigned long long)le64_to_cpu(u1
->a
),
462 (unsigned long long)le64_to_cpu(u1
->b
),
463 buffer_info
->skb
, next_desc
);
465 pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n",
467 (unsigned long long)le64_to_cpu(u1
->a
),
468 (unsigned long long)le64_to_cpu(u1
->b
),
469 (unsigned long long)buffer_info
->dma
,
470 buffer_info
->skb
, next_desc
);
472 if (netif_msg_pktdata(adapter
) &&
474 print_hex_dump(KERN_INFO
, "",
475 DUMP_PREFIX_ADDRESS
, 16,
477 buffer_info
->skb
->data
,
478 adapter
->rx_buffer_len
,
486 * e1000_desc_unused - calculate if we have unused descriptors
488 static int e1000_desc_unused(struct e1000_ring
*ring
)
490 if (ring
->next_to_clean
> ring
->next_to_use
)
491 return ring
->next_to_clean
- ring
->next_to_use
- 1;
493 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
497 * e1000e_systim_to_hwtstamp - convert system time value to hw time stamp
498 * @adapter: board private structure
499 * @hwtstamps: time stamp structure to update
500 * @systim: unsigned 64bit system time value.
502 * Convert the system time value stored in the RX/TXSTMP registers into a
503 * hwtstamp which can be used by the upper level time stamping functions.
505 * The 'systim_lock' spinlock is used to protect the consistency of the
506 * system time value. This is needed because reading the 64 bit time
507 * value involves reading two 32 bit registers. The first read latches the
510 static void e1000e_systim_to_hwtstamp(struct e1000_adapter
*adapter
,
511 struct skb_shared_hwtstamps
*hwtstamps
,
517 spin_lock_irqsave(&adapter
->systim_lock
, flags
);
518 ns
= timecounter_cyc2time(&adapter
->tc
, systim
);
519 spin_unlock_irqrestore(&adapter
->systim_lock
, flags
);
521 memset(hwtstamps
, 0, sizeof(*hwtstamps
));
522 hwtstamps
->hwtstamp
= ns_to_ktime(ns
);
526 * e1000e_rx_hwtstamp - utility function which checks for Rx time stamp
527 * @adapter: board private structure
528 * @status: descriptor extended error and status field
529 * @skb: particular skb to include time stamp
531 * If the time stamp is valid, convert it into the timecounter ns value
532 * and store that result into the shhwtstamps structure which is passed
533 * up the network stack.
535 static void e1000e_rx_hwtstamp(struct e1000_adapter
*adapter
, u32 status
,
538 struct e1000_hw
*hw
= &adapter
->hw
;
541 if (!(adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
) ||
542 !(status
& E1000_RXDEXT_STATERR_TST
) ||
543 !(er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_VALID
))
546 /* The Rx time stamp registers contain the time stamp. No other
547 * received packet will be time stamped until the Rx time stamp
548 * registers are read. Because only one packet can be time stamped
549 * at a time, the register values must belong to this packet and
550 * therefore none of the other additional attributes need to be
553 rxstmp
= (u64
)er32(RXSTMPL
);
554 rxstmp
|= (u64
)er32(RXSTMPH
) << 32;
555 e1000e_systim_to_hwtstamp(adapter
, skb_hwtstamps(skb
), rxstmp
);
557 adapter
->flags2
&= ~FLAG2_CHECK_RX_HWTSTAMP
;
561 * e1000_receive_skb - helper function to handle Rx indications
562 * @adapter: board private structure
563 * @staterr: descriptor extended error and status field as written by hardware
564 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
565 * @skb: pointer to sk_buff to be indicated to stack
567 static void e1000_receive_skb(struct e1000_adapter
*adapter
,
568 struct net_device
*netdev
, struct sk_buff
*skb
,
569 u32 staterr
, __le16 vlan
)
571 u16 tag
= le16_to_cpu(vlan
);
573 e1000e_rx_hwtstamp(adapter
, staterr
, skb
);
575 skb
->protocol
= eth_type_trans(skb
, netdev
);
577 if (staterr
& E1000_RXD_STAT_VP
)
578 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
), tag
);
580 napi_gro_receive(&adapter
->napi
, skb
);
584 * e1000_rx_checksum - Receive Checksum Offload
585 * @adapter: board private structure
586 * @status_err: receive descriptor status and error fields
587 * @csum: receive descriptor csum field
588 * @sk_buff: socket buffer with received data
590 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
593 u16 status
= (u16
)status_err
;
594 u8 errors
= (u8
)(status_err
>> 24);
596 skb_checksum_none_assert(skb
);
598 /* Rx checksum disabled */
599 if (!(adapter
->netdev
->features
& NETIF_F_RXCSUM
))
602 /* Ignore Checksum bit is set */
603 if (status
& E1000_RXD_STAT_IXSM
)
606 /* TCP/UDP checksum error bit or IP checksum error bit is set */
607 if (errors
& (E1000_RXD_ERR_TCPE
| E1000_RXD_ERR_IPE
)) {
608 /* let the stack verify checksum errors */
609 adapter
->hw_csum_err
++;
613 /* TCP/UDP Checksum has not been calculated */
614 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
617 /* It must be a TCP or UDP packet with a valid checksum */
618 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
619 adapter
->hw_csum_good
++;
622 static void e1000e_update_rdt_wa(struct e1000_ring
*rx_ring
, unsigned int i
)
624 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
625 struct e1000_hw
*hw
= &adapter
->hw
;
626 s32 ret_val
= __ew32_prepare(hw
);
628 writel(i
, rx_ring
->tail
);
630 if (unlikely(!ret_val
&& (i
!= readl(rx_ring
->tail
)))) {
631 u32 rctl
= er32(RCTL
);
633 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
634 e_err("ME firmware caused invalid RDT - resetting\n");
635 schedule_work(&adapter
->reset_task
);
639 static void e1000e_update_tdt_wa(struct e1000_ring
*tx_ring
, unsigned int i
)
641 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
642 struct e1000_hw
*hw
= &adapter
->hw
;
643 s32 ret_val
= __ew32_prepare(hw
);
645 writel(i
, tx_ring
->tail
);
647 if (unlikely(!ret_val
&& (i
!= readl(tx_ring
->tail
)))) {
648 u32 tctl
= er32(TCTL
);
650 ew32(TCTL
, tctl
& ~E1000_TCTL_EN
);
651 e_err("ME firmware caused invalid TDT - resetting\n");
652 schedule_work(&adapter
->reset_task
);
657 * e1000_alloc_rx_buffers - Replace used receive buffers
658 * @rx_ring: Rx descriptor ring
660 static void e1000_alloc_rx_buffers(struct e1000_ring
*rx_ring
,
661 int cleaned_count
, gfp_t gfp
)
663 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
664 struct net_device
*netdev
= adapter
->netdev
;
665 struct pci_dev
*pdev
= adapter
->pdev
;
666 union e1000_rx_desc_extended
*rx_desc
;
667 struct e1000_buffer
*buffer_info
;
670 unsigned int bufsz
= adapter
->rx_buffer_len
;
672 i
= rx_ring
->next_to_use
;
673 buffer_info
= &rx_ring
->buffer_info
[i
];
675 while (cleaned_count
--) {
676 skb
= buffer_info
->skb
;
682 skb
= __netdev_alloc_skb_ip_align(netdev
, bufsz
, gfp
);
684 /* Better luck next round */
685 adapter
->alloc_rx_buff_failed
++;
689 buffer_info
->skb
= skb
;
691 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
692 adapter
->rx_buffer_len
,
694 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
695 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
696 adapter
->rx_dma_failed
++;
700 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
701 rx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
703 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
704 /* Force memory writes to complete before letting h/w
705 * know there are new descriptors to fetch. (Only
706 * applicable for weak-ordered memory model archs,
710 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
711 e1000e_update_rdt_wa(rx_ring
, i
);
713 writel(i
, rx_ring
->tail
);
716 if (i
== rx_ring
->count
)
718 buffer_info
= &rx_ring
->buffer_info
[i
];
721 rx_ring
->next_to_use
= i
;
725 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
726 * @rx_ring: Rx descriptor ring
728 static void e1000_alloc_rx_buffers_ps(struct e1000_ring
*rx_ring
,
729 int cleaned_count
, gfp_t gfp
)
731 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
732 struct net_device
*netdev
= adapter
->netdev
;
733 struct pci_dev
*pdev
= adapter
->pdev
;
734 union e1000_rx_desc_packet_split
*rx_desc
;
735 struct e1000_buffer
*buffer_info
;
736 struct e1000_ps_page
*ps_page
;
740 i
= rx_ring
->next_to_use
;
741 buffer_info
= &rx_ring
->buffer_info
[i
];
743 while (cleaned_count
--) {
744 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
746 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
747 ps_page
= &buffer_info
->ps_pages
[j
];
748 if (j
>= adapter
->rx_ps_pages
) {
749 /* all unused desc entries get hw null ptr */
750 rx_desc
->read
.buffer_addr
[j
+ 1] =
754 if (!ps_page
->page
) {
755 ps_page
->page
= alloc_page(gfp
);
756 if (!ps_page
->page
) {
757 adapter
->alloc_rx_buff_failed
++;
760 ps_page
->dma
= dma_map_page(&pdev
->dev
,
764 if (dma_mapping_error(&pdev
->dev
,
766 dev_err(&adapter
->pdev
->dev
,
767 "Rx DMA page map failed\n");
768 adapter
->rx_dma_failed
++;
772 /* Refresh the desc even if buffer_addrs
773 * didn't change because each write-back
776 rx_desc
->read
.buffer_addr
[j
+ 1] =
777 cpu_to_le64(ps_page
->dma
);
780 skb
= __netdev_alloc_skb_ip_align(netdev
, adapter
->rx_ps_bsize0
,
784 adapter
->alloc_rx_buff_failed
++;
788 buffer_info
->skb
= skb
;
789 buffer_info
->dma
= dma_map_single(&pdev
->dev
, skb
->data
,
790 adapter
->rx_ps_bsize0
,
792 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
793 dev_err(&pdev
->dev
, "Rx DMA map failed\n");
794 adapter
->rx_dma_failed
++;
796 dev_kfree_skb_any(skb
);
797 buffer_info
->skb
= NULL
;
801 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
803 if (unlikely(!(i
& (E1000_RX_BUFFER_WRITE
- 1)))) {
804 /* Force memory writes to complete before letting h/w
805 * know there are new descriptors to fetch. (Only
806 * applicable for weak-ordered memory model archs,
810 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
811 e1000e_update_rdt_wa(rx_ring
, i
<< 1);
813 writel(i
<< 1, rx_ring
->tail
);
817 if (i
== rx_ring
->count
)
819 buffer_info
= &rx_ring
->buffer_info
[i
];
823 rx_ring
->next_to_use
= i
;
827 * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
828 * @rx_ring: Rx descriptor ring
829 * @cleaned_count: number of buffers to allocate this pass
832 static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring
*rx_ring
,
833 int cleaned_count
, gfp_t gfp
)
835 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
836 struct net_device
*netdev
= adapter
->netdev
;
837 struct pci_dev
*pdev
= adapter
->pdev
;
838 union e1000_rx_desc_extended
*rx_desc
;
839 struct e1000_buffer
*buffer_info
;
842 unsigned int bufsz
= 256 - 16; /* for skb_reserve */
844 i
= rx_ring
->next_to_use
;
845 buffer_info
= &rx_ring
->buffer_info
[i
];
847 while (cleaned_count
--) {
848 skb
= buffer_info
->skb
;
854 skb
= __netdev_alloc_skb_ip_align(netdev
, bufsz
, gfp
);
855 if (unlikely(!skb
)) {
856 /* Better luck next round */
857 adapter
->alloc_rx_buff_failed
++;
861 buffer_info
->skb
= skb
;
863 /* allocate a new page if necessary */
864 if (!buffer_info
->page
) {
865 buffer_info
->page
= alloc_page(gfp
);
866 if (unlikely(!buffer_info
->page
)) {
867 adapter
->alloc_rx_buff_failed
++;
872 if (!buffer_info
->dma
) {
873 buffer_info
->dma
= dma_map_page(&pdev
->dev
,
874 buffer_info
->page
, 0,
877 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
)) {
878 adapter
->alloc_rx_buff_failed
++;
883 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
884 rx_desc
->read
.buffer_addr
= cpu_to_le64(buffer_info
->dma
);
886 if (unlikely(++i
== rx_ring
->count
))
888 buffer_info
= &rx_ring
->buffer_info
[i
];
891 if (likely(rx_ring
->next_to_use
!= i
)) {
892 rx_ring
->next_to_use
= i
;
893 if (unlikely(i
-- == 0))
894 i
= (rx_ring
->count
- 1);
896 /* Force memory writes to complete before letting h/w
897 * know there are new descriptors to fetch. (Only
898 * applicable for weak-ordered memory model archs,
902 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
903 e1000e_update_rdt_wa(rx_ring
, i
);
905 writel(i
, rx_ring
->tail
);
909 static inline void e1000_rx_hash(struct net_device
*netdev
, __le32 rss
,
912 if (netdev
->features
& NETIF_F_RXHASH
)
913 skb_set_hash(skb
, le32_to_cpu(rss
), PKT_HASH_TYPE_L3
);
917 * e1000_clean_rx_irq - Send received data up the network stack
918 * @rx_ring: Rx descriptor ring
920 * the return value indicates whether actual cleaning was done, there
921 * is no guarantee that everything was cleaned
923 static bool e1000_clean_rx_irq(struct e1000_ring
*rx_ring
, int *work_done
,
926 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
927 struct net_device
*netdev
= adapter
->netdev
;
928 struct pci_dev
*pdev
= adapter
->pdev
;
929 struct e1000_hw
*hw
= &adapter
->hw
;
930 union e1000_rx_desc_extended
*rx_desc
, *next_rxd
;
931 struct e1000_buffer
*buffer_info
, *next_buffer
;
934 int cleaned_count
= 0;
935 bool cleaned
= false;
936 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
938 i
= rx_ring
->next_to_clean
;
939 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
940 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
941 buffer_info
= &rx_ring
->buffer_info
[i
];
943 while (staterr
& E1000_RXD_STAT_DD
) {
946 if (*work_done
>= work_to_do
)
949 rmb(); /* read descriptor and rx_buffer_info after status DD */
951 skb
= buffer_info
->skb
;
952 buffer_info
->skb
= NULL
;
954 prefetch(skb
->data
- NET_IP_ALIGN
);
957 if (i
== rx_ring
->count
)
959 next_rxd
= E1000_RX_DESC_EXT(*rx_ring
, i
);
962 next_buffer
= &rx_ring
->buffer_info
[i
];
966 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
967 adapter
->rx_buffer_len
, DMA_FROM_DEVICE
);
968 buffer_info
->dma
= 0;
970 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
972 /* !EOP means multiple descriptors were used to store a single
973 * packet, if that's the case we need to toss it. In fact, we
974 * need to toss every packet with the EOP bit clear and the
975 * next frame that _does_ have the EOP bit set, as it is by
976 * definition only a frame fragment
978 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
)))
979 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
981 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
982 /* All receives must fit into a single buffer */
983 e_dbg("Receive packet consumed multiple buffers\n");
985 buffer_info
->skb
= skb
;
986 if (staterr
& E1000_RXD_STAT_EOP
)
987 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
991 if (unlikely((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
992 !(netdev
->features
& NETIF_F_RXALL
))) {
994 buffer_info
->skb
= skb
;
998 /* adjust length to remove Ethernet CRC */
999 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1000 /* If configured to store CRC, don't subtract FCS,
1001 * but keep the FCS bytes out of the total_rx_bytes
1004 if (netdev
->features
& NETIF_F_RXFCS
)
1005 total_rx_bytes
-= 4;
1010 total_rx_bytes
+= length
;
1013 /* code added for copybreak, this should improve
1014 * performance for small packets with large amounts
1015 * of reassembly being done in the stack
1017 if (length
< copybreak
) {
1018 struct sk_buff
*new_skb
=
1019 netdev_alloc_skb_ip_align(netdev
, length
);
1021 skb_copy_to_linear_data_offset(new_skb
,
1027 /* save the skb in buffer_info as good */
1028 buffer_info
->skb
= skb
;
1031 /* else just continue with the old one */
1033 /* end copybreak code */
1034 skb_put(skb
, length
);
1036 /* Receive Checksum Offload */
1037 e1000_rx_checksum(adapter
, staterr
, skb
);
1039 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1041 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1042 rx_desc
->wb
.upper
.vlan
);
1045 rx_desc
->wb
.upper
.status_error
&= cpu_to_le32(~0xFF);
1047 /* return some buffers to hardware, one at a time is too slow */
1048 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1049 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1054 /* use prefetched values */
1056 buffer_info
= next_buffer
;
1058 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1060 rx_ring
->next_to_clean
= i
;
1062 cleaned_count
= e1000_desc_unused(rx_ring
);
1064 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1066 adapter
->total_rx_bytes
+= total_rx_bytes
;
1067 adapter
->total_rx_packets
+= total_rx_packets
;
1071 static void e1000_put_txbuf(struct e1000_ring
*tx_ring
,
1072 struct e1000_buffer
*buffer_info
)
1074 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
1076 if (buffer_info
->dma
) {
1077 if (buffer_info
->mapped_as_page
)
1078 dma_unmap_page(&adapter
->pdev
->dev
, buffer_info
->dma
,
1079 buffer_info
->length
, DMA_TO_DEVICE
);
1081 dma_unmap_single(&adapter
->pdev
->dev
, buffer_info
->dma
,
1082 buffer_info
->length
, DMA_TO_DEVICE
);
1083 buffer_info
->dma
= 0;
1085 if (buffer_info
->skb
) {
1086 dev_kfree_skb_any(buffer_info
->skb
);
1087 buffer_info
->skb
= NULL
;
1089 buffer_info
->time_stamp
= 0;
1092 static void e1000_print_hw_hang(struct work_struct
*work
)
1094 struct e1000_adapter
*adapter
= container_of(work
,
1095 struct e1000_adapter
,
1097 struct net_device
*netdev
= adapter
->netdev
;
1098 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1099 unsigned int i
= tx_ring
->next_to_clean
;
1100 unsigned int eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1101 struct e1000_tx_desc
*eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1102 struct e1000_hw
*hw
= &adapter
->hw
;
1103 u16 phy_status
, phy_1000t_status
, phy_ext_status
;
1106 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1109 if (!adapter
->tx_hang_recheck
&& (adapter
->flags2
& FLAG2_DMA_BURST
)) {
1110 /* May be block on write-back, flush and detect again
1111 * flush pending descriptor writebacks to memory
1113 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
1114 /* execute the writes immediately */
1116 /* Due to rare timing issues, write to TIDV again to ensure
1117 * the write is successful
1119 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
1120 /* execute the writes immediately */
1122 adapter
->tx_hang_recheck
= true;
1125 adapter
->tx_hang_recheck
= false;
1127 if (er32(TDH(0)) == er32(TDT(0))) {
1128 e_dbg("false hang detected, ignoring\n");
1132 /* Real hang detected */
1133 netif_stop_queue(netdev
);
1135 e1e_rphy(hw
, MII_BMSR
, &phy_status
);
1136 e1e_rphy(hw
, MII_STAT1000
, &phy_1000t_status
);
1137 e1e_rphy(hw
, MII_ESTATUS
, &phy_ext_status
);
1139 pci_read_config_word(adapter
->pdev
, PCI_STATUS
, &pci_status
);
1141 /* detected Hardware unit hang */
1142 e_err("Detected Hardware Unit Hang:\n"
1145 " next_to_use <%x>\n"
1146 " next_to_clean <%x>\n"
1147 "buffer_info[next_to_clean]:\n"
1148 " time_stamp <%lx>\n"
1149 " next_to_watch <%x>\n"
1151 " next_to_watch.status <%x>\n"
1154 "PHY 1000BASE-T Status <%x>\n"
1155 "PHY Extended Status <%x>\n"
1156 "PCI Status <%x>\n",
1157 readl(tx_ring
->head
), readl(tx_ring
->tail
), tx_ring
->next_to_use
,
1158 tx_ring
->next_to_clean
, tx_ring
->buffer_info
[eop
].time_stamp
,
1159 eop
, jiffies
, eop_desc
->upper
.fields
.status
, er32(STATUS
),
1160 phy_status
, phy_1000t_status
, phy_ext_status
, pci_status
);
1162 e1000e_dump(adapter
);
1164 /* Suggest workaround for known h/w issue */
1165 if ((hw
->mac
.type
== e1000_pchlan
) && (er32(CTRL
) & E1000_CTRL_TFCE
))
1166 e_err("Try turning off Tx pause (flow control) via ethtool\n");
1170 * e1000e_tx_hwtstamp_work - check for Tx time stamp
1171 * @work: pointer to work struct
1173 * This work function polls the TSYNCTXCTL valid bit to determine when a
1174 * timestamp has been taken for the current stored skb. The timestamp must
1175 * be for this skb because only one such packet is allowed in the queue.
1177 static void e1000e_tx_hwtstamp_work(struct work_struct
*work
)
1179 struct e1000_adapter
*adapter
= container_of(work
, struct e1000_adapter
,
1181 struct e1000_hw
*hw
= &adapter
->hw
;
1183 if (er32(TSYNCTXCTL
) & E1000_TSYNCTXCTL_VALID
) {
1184 struct skb_shared_hwtstamps shhwtstamps
;
1187 txstmp
= er32(TXSTMPL
);
1188 txstmp
|= (u64
)er32(TXSTMPH
) << 32;
1190 e1000e_systim_to_hwtstamp(adapter
, &shhwtstamps
, txstmp
);
1192 skb_tstamp_tx(adapter
->tx_hwtstamp_skb
, &shhwtstamps
);
1193 dev_kfree_skb_any(adapter
->tx_hwtstamp_skb
);
1194 adapter
->tx_hwtstamp_skb
= NULL
;
1195 } else if (time_after(jiffies
, adapter
->tx_hwtstamp_start
1196 + adapter
->tx_timeout_factor
* HZ
)) {
1197 dev_kfree_skb_any(adapter
->tx_hwtstamp_skb
);
1198 adapter
->tx_hwtstamp_skb
= NULL
;
1199 adapter
->tx_hwtstamp_timeouts
++;
1200 e_warn("clearing Tx timestamp hang\n");
1202 /* reschedule to check later */
1203 schedule_work(&adapter
->tx_hwtstamp_work
);
1208 * e1000_clean_tx_irq - Reclaim resources after transmit completes
1209 * @tx_ring: Tx descriptor ring
1211 * the return value indicates whether actual cleaning was done, there
1212 * is no guarantee that everything was cleaned
1214 static bool e1000_clean_tx_irq(struct e1000_ring
*tx_ring
)
1216 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
1217 struct net_device
*netdev
= adapter
->netdev
;
1218 struct e1000_hw
*hw
= &adapter
->hw
;
1219 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
1220 struct e1000_buffer
*buffer_info
;
1221 unsigned int i
, eop
;
1222 unsigned int count
= 0;
1223 unsigned int total_tx_bytes
= 0, total_tx_packets
= 0;
1224 unsigned int bytes_compl
= 0, pkts_compl
= 0;
1226 i
= tx_ring
->next_to_clean
;
1227 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1228 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1230 while ((eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
1231 (count
< tx_ring
->count
)) {
1232 bool cleaned
= false;
1234 rmb(); /* read buffer_info after eop_desc */
1235 for (; !cleaned
; count
++) {
1236 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
1237 buffer_info
= &tx_ring
->buffer_info
[i
];
1238 cleaned
= (i
== eop
);
1241 total_tx_packets
+= buffer_info
->segs
;
1242 total_tx_bytes
+= buffer_info
->bytecount
;
1243 if (buffer_info
->skb
) {
1244 bytes_compl
+= buffer_info
->skb
->len
;
1249 e1000_put_txbuf(tx_ring
, buffer_info
);
1250 tx_desc
->upper
.data
= 0;
1253 if (i
== tx_ring
->count
)
1257 if (i
== tx_ring
->next_to_use
)
1259 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
1260 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
1263 tx_ring
->next_to_clean
= i
;
1265 netdev_completed_queue(netdev
, pkts_compl
, bytes_compl
);
1267 #define TX_WAKE_THRESHOLD 32
1268 if (count
&& netif_carrier_ok(netdev
) &&
1269 e1000_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
) {
1270 /* Make sure that anybody stopping the queue after this
1271 * sees the new next_to_clean.
1275 if (netif_queue_stopped(netdev
) &&
1276 !(test_bit(__E1000_DOWN
, &adapter
->state
))) {
1277 netif_wake_queue(netdev
);
1278 ++adapter
->restart_queue
;
1282 if (adapter
->detect_tx_hung
) {
1283 /* Detect a transmit hang in hardware, this serializes the
1284 * check with the clearing of time_stamp and movement of i
1286 adapter
->detect_tx_hung
= false;
1287 if (tx_ring
->buffer_info
[i
].time_stamp
&&
1288 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
1289 + (adapter
->tx_timeout_factor
* HZ
)) &&
1290 !(er32(STATUS
) & E1000_STATUS_TXOFF
))
1291 schedule_work(&adapter
->print_hang_task
);
1293 adapter
->tx_hang_recheck
= false;
1295 adapter
->total_tx_bytes
+= total_tx_bytes
;
1296 adapter
->total_tx_packets
+= total_tx_packets
;
1297 return count
< tx_ring
->count
;
1301 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
1302 * @rx_ring: Rx descriptor ring
1304 * the return value indicates whether actual cleaning was done, there
1305 * is no guarantee that everything was cleaned
1307 static bool e1000_clean_rx_irq_ps(struct e1000_ring
*rx_ring
, int *work_done
,
1310 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1311 struct e1000_hw
*hw
= &adapter
->hw
;
1312 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
1313 struct net_device
*netdev
= adapter
->netdev
;
1314 struct pci_dev
*pdev
= adapter
->pdev
;
1315 struct e1000_buffer
*buffer_info
, *next_buffer
;
1316 struct e1000_ps_page
*ps_page
;
1317 struct sk_buff
*skb
;
1319 u32 length
, staterr
;
1320 int cleaned_count
= 0;
1321 bool cleaned
= false;
1322 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1324 i
= rx_ring
->next_to_clean
;
1325 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
1326 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1327 buffer_info
= &rx_ring
->buffer_info
[i
];
1329 while (staterr
& E1000_RXD_STAT_DD
) {
1330 if (*work_done
>= work_to_do
)
1333 skb
= buffer_info
->skb
;
1334 rmb(); /* read descriptor and rx_buffer_info after status DD */
1336 /* in the packet split case this is header only */
1337 prefetch(skb
->data
- NET_IP_ALIGN
);
1340 if (i
== rx_ring
->count
)
1342 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
1345 next_buffer
= &rx_ring
->buffer_info
[i
];
1349 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1350 adapter
->rx_ps_bsize0
, DMA_FROM_DEVICE
);
1351 buffer_info
->dma
= 0;
1353 /* see !EOP comment in other Rx routine */
1354 if (!(staterr
& E1000_RXD_STAT_EOP
))
1355 adapter
->flags2
|= FLAG2_IS_DISCARDING
;
1357 if (adapter
->flags2
& FLAG2_IS_DISCARDING
) {
1358 e_dbg("Packet Split buffers didn't pick up the full packet\n");
1359 dev_kfree_skb_irq(skb
);
1360 if (staterr
& E1000_RXD_STAT_EOP
)
1361 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1365 if (unlikely((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
1366 !(netdev
->features
& NETIF_F_RXALL
))) {
1367 dev_kfree_skb_irq(skb
);
1371 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
1374 e_dbg("Last part of the packet spanning multiple descriptors\n");
1375 dev_kfree_skb_irq(skb
);
1380 skb_put(skb
, length
);
1383 /* this looks ugly, but it seems compiler issues make
1384 * it more efficient than reusing j
1386 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
1388 /* page alloc/put takes too long and effects small
1389 * packet throughput, so unsplit small packets and
1390 * save the alloc/put only valid in softirq (napi)
1391 * context to call kmap_*
1393 if (l1
&& (l1
<= copybreak
) &&
1394 ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
1397 ps_page
= &buffer_info
->ps_pages
[0];
1399 /* there is no documentation about how to call
1400 * kmap_atomic, so we can't hold the mapping
1403 dma_sync_single_for_cpu(&pdev
->dev
,
1407 vaddr
= kmap_atomic(ps_page
->page
);
1408 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
1409 kunmap_atomic(vaddr
);
1410 dma_sync_single_for_device(&pdev
->dev
,
1415 /* remove the CRC */
1416 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1417 if (!(netdev
->features
& NETIF_F_RXFCS
))
1426 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1427 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
]);
1431 ps_page
= &buffer_info
->ps_pages
[j
];
1432 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1435 skb_fill_page_desc(skb
, j
, ps_page
->page
, 0, length
);
1436 ps_page
->page
= NULL
;
1438 skb
->data_len
+= length
;
1439 skb
->truesize
+= PAGE_SIZE
;
1442 /* strip the ethernet crc, problem is we're using pages now so
1443 * this whole operation can get a little cpu intensive
1445 if (!(adapter
->flags2
& FLAG2_CRC_STRIPPING
)) {
1446 if (!(netdev
->features
& NETIF_F_RXFCS
))
1447 pskb_trim(skb
, skb
->len
- 4);
1451 total_rx_bytes
+= skb
->len
;
1454 e1000_rx_checksum(adapter
, staterr
, skb
);
1456 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1458 if (rx_desc
->wb
.upper
.header_status
&
1459 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
))
1460 adapter
->rx_hdr_split
++;
1462 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1463 rx_desc
->wb
.middle
.vlan
);
1466 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
1467 buffer_info
->skb
= NULL
;
1469 /* return some buffers to hardware, one at a time is too slow */
1470 if (cleaned_count
>= E1000_RX_BUFFER_WRITE
) {
1471 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1476 /* use prefetched values */
1478 buffer_info
= next_buffer
;
1480 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
1482 rx_ring
->next_to_clean
= i
;
1484 cleaned_count
= e1000_desc_unused(rx_ring
);
1486 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1488 adapter
->total_rx_bytes
+= total_rx_bytes
;
1489 adapter
->total_rx_packets
+= total_rx_packets
;
1494 * e1000_consume_page - helper function
1496 static void e1000_consume_page(struct e1000_buffer
*bi
, struct sk_buff
*skb
,
1501 skb
->data_len
+= length
;
1502 skb
->truesize
+= PAGE_SIZE
;
1506 * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
1507 * @adapter: board private structure
1509 * the return value indicates whether actual cleaning was done, there
1510 * is no guarantee that everything was cleaned
1512 static bool e1000_clean_jumbo_rx_irq(struct e1000_ring
*rx_ring
, int *work_done
,
1515 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1516 struct net_device
*netdev
= adapter
->netdev
;
1517 struct pci_dev
*pdev
= adapter
->pdev
;
1518 union e1000_rx_desc_extended
*rx_desc
, *next_rxd
;
1519 struct e1000_buffer
*buffer_info
, *next_buffer
;
1520 u32 length
, staterr
;
1522 int cleaned_count
= 0;
1523 bool cleaned
= false;
1524 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
1525 struct skb_shared_info
*shinfo
;
1527 i
= rx_ring
->next_to_clean
;
1528 rx_desc
= E1000_RX_DESC_EXT(*rx_ring
, i
);
1529 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1530 buffer_info
= &rx_ring
->buffer_info
[i
];
1532 while (staterr
& E1000_RXD_STAT_DD
) {
1533 struct sk_buff
*skb
;
1535 if (*work_done
>= work_to_do
)
1538 rmb(); /* read descriptor and rx_buffer_info after status DD */
1540 skb
= buffer_info
->skb
;
1541 buffer_info
->skb
= NULL
;
1544 if (i
== rx_ring
->count
)
1546 next_rxd
= E1000_RX_DESC_EXT(*rx_ring
, i
);
1549 next_buffer
= &rx_ring
->buffer_info
[i
];
1553 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
, PAGE_SIZE
,
1555 buffer_info
->dma
= 0;
1557 length
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
1559 /* errors is only valid for DD + EOP descriptors */
1560 if (unlikely((staterr
& E1000_RXD_STAT_EOP
) &&
1561 ((staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
) &&
1562 !(netdev
->features
& NETIF_F_RXALL
)))) {
1563 /* recycle both page and skb */
1564 buffer_info
->skb
= skb
;
1565 /* an error means any chain goes out the window too */
1566 if (rx_ring
->rx_skb_top
)
1567 dev_kfree_skb_irq(rx_ring
->rx_skb_top
);
1568 rx_ring
->rx_skb_top
= NULL
;
1571 #define rxtop (rx_ring->rx_skb_top)
1572 if (!(staterr
& E1000_RXD_STAT_EOP
)) {
1573 /* this descriptor is only the beginning (or middle) */
1575 /* this is the beginning of a chain */
1577 skb_fill_page_desc(rxtop
, 0, buffer_info
->page
,
1580 /* this is the middle of a chain */
1581 shinfo
= skb_shinfo(rxtop
);
1582 skb_fill_page_desc(rxtop
, shinfo
->nr_frags
,
1583 buffer_info
->page
, 0,
1585 /* re-use the skb, only consumed the page */
1586 buffer_info
->skb
= skb
;
1588 e1000_consume_page(buffer_info
, rxtop
, length
);
1592 /* end of the chain */
1593 shinfo
= skb_shinfo(rxtop
);
1594 skb_fill_page_desc(rxtop
, shinfo
->nr_frags
,
1595 buffer_info
->page
, 0,
1597 /* re-use the current skb, we only consumed the
1600 buffer_info
->skb
= skb
;
1603 e1000_consume_page(buffer_info
, skb
, length
);
1605 /* no chain, got EOP, this buf is the packet
1606 * copybreak to save the put_page/alloc_page
1608 if (length
<= copybreak
&&
1609 skb_tailroom(skb
) >= length
) {
1611 vaddr
= kmap_atomic(buffer_info
->page
);
1612 memcpy(skb_tail_pointer(skb
), vaddr
,
1614 kunmap_atomic(vaddr
);
1615 /* re-use the page, so don't erase
1618 skb_put(skb
, length
);
1620 skb_fill_page_desc(skb
, 0,
1621 buffer_info
->page
, 0,
1623 e1000_consume_page(buffer_info
, skb
,
1629 /* Receive Checksum Offload */
1630 e1000_rx_checksum(adapter
, staterr
, skb
);
1632 e1000_rx_hash(netdev
, rx_desc
->wb
.lower
.hi_dword
.rss
, skb
);
1634 /* probably a little skewed due to removing CRC */
1635 total_rx_bytes
+= skb
->len
;
1638 /* eth type trans needs skb->data to point to something */
1639 if (!pskb_may_pull(skb
, ETH_HLEN
)) {
1640 e_err("pskb_may_pull failed.\n");
1641 dev_kfree_skb_irq(skb
);
1645 e1000_receive_skb(adapter
, netdev
, skb
, staterr
,
1646 rx_desc
->wb
.upper
.vlan
);
1649 rx_desc
->wb
.upper
.status_error
&= cpu_to_le32(~0xFF);
1651 /* return some buffers to hardware, one at a time is too slow */
1652 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
1653 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
,
1658 /* use prefetched values */
1660 buffer_info
= next_buffer
;
1662 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1664 rx_ring
->next_to_clean
= i
;
1666 cleaned_count
= e1000_desc_unused(rx_ring
);
1668 adapter
->alloc_rx_buf(rx_ring
, cleaned_count
, GFP_ATOMIC
);
1670 adapter
->total_rx_bytes
+= total_rx_bytes
;
1671 adapter
->total_rx_packets
+= total_rx_packets
;
1676 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1677 * @rx_ring: Rx descriptor ring
1679 static void e1000_clean_rx_ring(struct e1000_ring
*rx_ring
)
1681 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
1682 struct e1000_buffer
*buffer_info
;
1683 struct e1000_ps_page
*ps_page
;
1684 struct pci_dev
*pdev
= adapter
->pdev
;
1687 /* Free all the Rx ring sk_buffs */
1688 for (i
= 0; i
< rx_ring
->count
; i
++) {
1689 buffer_info
= &rx_ring
->buffer_info
[i
];
1690 if (buffer_info
->dma
) {
1691 if (adapter
->clean_rx
== e1000_clean_rx_irq
)
1692 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1693 adapter
->rx_buffer_len
,
1695 else if (adapter
->clean_rx
== e1000_clean_jumbo_rx_irq
)
1696 dma_unmap_page(&pdev
->dev
, buffer_info
->dma
,
1697 PAGE_SIZE
, DMA_FROM_DEVICE
);
1698 else if (adapter
->clean_rx
== e1000_clean_rx_irq_ps
)
1699 dma_unmap_single(&pdev
->dev
, buffer_info
->dma
,
1700 adapter
->rx_ps_bsize0
,
1702 buffer_info
->dma
= 0;
1705 if (buffer_info
->page
) {
1706 put_page(buffer_info
->page
);
1707 buffer_info
->page
= NULL
;
1710 if (buffer_info
->skb
) {
1711 dev_kfree_skb(buffer_info
->skb
);
1712 buffer_info
->skb
= NULL
;
1715 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1716 ps_page
= &buffer_info
->ps_pages
[j
];
1719 dma_unmap_page(&pdev
->dev
, ps_page
->dma
, PAGE_SIZE
,
1722 put_page(ps_page
->page
);
1723 ps_page
->page
= NULL
;
1727 /* there also may be some cached data from a chained receive */
1728 if (rx_ring
->rx_skb_top
) {
1729 dev_kfree_skb(rx_ring
->rx_skb_top
);
1730 rx_ring
->rx_skb_top
= NULL
;
1733 /* Zero out the descriptor ring */
1734 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1736 rx_ring
->next_to_clean
= 0;
1737 rx_ring
->next_to_use
= 0;
1738 adapter
->flags2
&= ~FLAG2_IS_DISCARDING
;
1740 writel(0, rx_ring
->head
);
1741 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
1742 e1000e_update_rdt_wa(rx_ring
, 0);
1744 writel(0, rx_ring
->tail
);
1747 static void e1000e_downshift_workaround(struct work_struct
*work
)
1749 struct e1000_adapter
*adapter
= container_of(work
,
1750 struct e1000_adapter
,
1753 if (test_bit(__E1000_DOWN
, &adapter
->state
))
1756 e1000e_gig_downshift_workaround_ich8lan(&adapter
->hw
);
1760 * e1000_intr_msi - Interrupt Handler
1761 * @irq: interrupt number
1762 * @data: pointer to a network interface device structure
1764 static irqreturn_t
e1000_intr_msi(int __always_unused irq
, void *data
)
1766 struct net_device
*netdev
= data
;
1767 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1768 struct e1000_hw
*hw
= &adapter
->hw
;
1769 u32 icr
= er32(ICR
);
1771 /* read ICR disables interrupts using IAM */
1772 if (icr
& E1000_ICR_LSC
) {
1773 hw
->mac
.get_link_status
= true;
1774 /* ICH8 workaround-- Call gig speed drop workaround on cable
1775 * disconnect (LSC) before accessing any PHY registers
1777 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1778 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1779 schedule_work(&adapter
->downshift_task
);
1781 /* 80003ES2LAN workaround-- For packet buffer work-around on
1782 * link down event; disable receives here in the ISR and reset
1783 * adapter in watchdog
1785 if (netif_carrier_ok(netdev
) &&
1786 adapter
->flags
& FLAG_RX_NEEDS_RESTART
) {
1787 /* disable receives */
1788 u32 rctl
= er32(RCTL
);
1790 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1791 adapter
->flags
|= FLAG_RESTART_NOW
;
1793 /* guard against interrupt when we're going down */
1794 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1795 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1798 /* Reset on uncorrectable ECC error */
1799 if ((icr
& E1000_ICR_ECCER
) && (hw
->mac
.type
== e1000_pch_lpt
)) {
1800 u32 pbeccsts
= er32(PBECCSTS
);
1802 adapter
->corr_errors
+=
1803 pbeccsts
& E1000_PBECCSTS_CORR_ERR_CNT_MASK
;
1804 adapter
->uncorr_errors
+=
1805 (pbeccsts
& E1000_PBECCSTS_UNCORR_ERR_CNT_MASK
) >>
1806 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT
;
1808 /* Do the reset outside of interrupt context */
1809 schedule_work(&adapter
->reset_task
);
1811 /* return immediately since reset is imminent */
1815 if (napi_schedule_prep(&adapter
->napi
)) {
1816 adapter
->total_tx_bytes
= 0;
1817 adapter
->total_tx_packets
= 0;
1818 adapter
->total_rx_bytes
= 0;
1819 adapter
->total_rx_packets
= 0;
1820 __napi_schedule(&adapter
->napi
);
1827 * e1000_intr - Interrupt Handler
1828 * @irq: interrupt number
1829 * @data: pointer to a network interface device structure
1831 static irqreturn_t
e1000_intr(int __always_unused irq
, void *data
)
1833 struct net_device
*netdev
= data
;
1834 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1835 struct e1000_hw
*hw
= &adapter
->hw
;
1836 u32 rctl
, icr
= er32(ICR
);
1838 if (!icr
|| test_bit(__E1000_DOWN
, &adapter
->state
))
1839 return IRQ_NONE
; /* Not our interrupt */
1841 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
1842 * not set, then the adapter didn't send an interrupt
1844 if (!(icr
& E1000_ICR_INT_ASSERTED
))
1847 /* Interrupt Auto-Mask...upon reading ICR,
1848 * interrupts are masked. No need for the
1852 if (icr
& E1000_ICR_LSC
) {
1853 hw
->mac
.get_link_status
= true;
1854 /* ICH8 workaround-- Call gig speed drop workaround on cable
1855 * disconnect (LSC) before accessing any PHY registers
1857 if ((adapter
->flags
& FLAG_LSC_GIG_SPEED_DROP
) &&
1858 (!(er32(STATUS
) & E1000_STATUS_LU
)))
1859 schedule_work(&adapter
->downshift_task
);
1861 /* 80003ES2LAN workaround--
1862 * For packet buffer work-around on link down event;
1863 * disable receives here in the ISR and
1864 * reset adapter in watchdog
1866 if (netif_carrier_ok(netdev
) &&
1867 (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)) {
1868 /* disable receives */
1870 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1871 adapter
->flags
|= FLAG_RESTART_NOW
;
1873 /* guard against interrupt when we're going down */
1874 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1875 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1878 /* Reset on uncorrectable ECC error */
1879 if ((icr
& E1000_ICR_ECCER
) && (hw
->mac
.type
== e1000_pch_lpt
)) {
1880 u32 pbeccsts
= er32(PBECCSTS
);
1882 adapter
->corr_errors
+=
1883 pbeccsts
& E1000_PBECCSTS_CORR_ERR_CNT_MASK
;
1884 adapter
->uncorr_errors
+=
1885 (pbeccsts
& E1000_PBECCSTS_UNCORR_ERR_CNT_MASK
) >>
1886 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT
;
1888 /* Do the reset outside of interrupt context */
1889 schedule_work(&adapter
->reset_task
);
1891 /* return immediately since reset is imminent */
1895 if (napi_schedule_prep(&adapter
->napi
)) {
1896 adapter
->total_tx_bytes
= 0;
1897 adapter
->total_tx_packets
= 0;
1898 adapter
->total_rx_bytes
= 0;
1899 adapter
->total_rx_packets
= 0;
1900 __napi_schedule(&adapter
->napi
);
1906 static irqreturn_t
e1000_msix_other(int __always_unused irq
, void *data
)
1908 struct net_device
*netdev
= data
;
1909 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1910 struct e1000_hw
*hw
= &adapter
->hw
;
1911 u32 icr
= er32(ICR
);
1913 if (!(icr
& E1000_ICR_INT_ASSERTED
)) {
1914 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1915 ew32(IMS
, E1000_IMS_OTHER
);
1919 if (icr
& adapter
->eiac_mask
)
1920 ew32(ICS
, (icr
& adapter
->eiac_mask
));
1922 if (icr
& E1000_ICR_OTHER
) {
1923 if (!(icr
& E1000_ICR_LSC
))
1924 goto no_link_interrupt
;
1925 hw
->mac
.get_link_status
= true;
1926 /* guard against interrupt when we're going down */
1927 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1928 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
1932 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
1933 ew32(IMS
, E1000_IMS_LSC
| E1000_IMS_OTHER
);
1938 static irqreturn_t
e1000_intr_msix_tx(int __always_unused irq
, void *data
)
1940 struct net_device
*netdev
= data
;
1941 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1942 struct e1000_hw
*hw
= &adapter
->hw
;
1943 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1945 adapter
->total_tx_bytes
= 0;
1946 adapter
->total_tx_packets
= 0;
1948 if (!e1000_clean_tx_irq(tx_ring
))
1949 /* Ring was not completely cleaned, so fire another interrupt */
1950 ew32(ICS
, tx_ring
->ims_val
);
1955 static irqreturn_t
e1000_intr_msix_rx(int __always_unused irq
, void *data
)
1957 struct net_device
*netdev
= data
;
1958 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1959 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1961 /* Write the ITR value calculated at the end of the
1962 * previous interrupt.
1964 if (rx_ring
->set_itr
) {
1965 writel(1000000000 / (rx_ring
->itr_val
* 256),
1966 rx_ring
->itr_register
);
1967 rx_ring
->set_itr
= 0;
1970 if (napi_schedule_prep(&adapter
->napi
)) {
1971 adapter
->total_rx_bytes
= 0;
1972 adapter
->total_rx_packets
= 0;
1973 __napi_schedule(&adapter
->napi
);
1979 * e1000_configure_msix - Configure MSI-X hardware
1981 * e1000_configure_msix sets up the hardware to properly
1982 * generate MSI-X interrupts.
1984 static void e1000_configure_msix(struct e1000_adapter
*adapter
)
1986 struct e1000_hw
*hw
= &adapter
->hw
;
1987 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
1988 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
1990 u32 ctrl_ext
, ivar
= 0;
1992 adapter
->eiac_mask
= 0;
1994 /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
1995 if (hw
->mac
.type
== e1000_82574
) {
1996 u32 rfctl
= er32(RFCTL
);
1998 rfctl
|= E1000_RFCTL_ACK_DIS
;
2002 /* Configure Rx vector */
2003 rx_ring
->ims_val
= E1000_IMS_RXQ0
;
2004 adapter
->eiac_mask
|= rx_ring
->ims_val
;
2005 if (rx_ring
->itr_val
)
2006 writel(1000000000 / (rx_ring
->itr_val
* 256),
2007 rx_ring
->itr_register
);
2009 writel(1, rx_ring
->itr_register
);
2010 ivar
= E1000_IVAR_INT_ALLOC_VALID
| vector
;
2012 /* Configure Tx vector */
2013 tx_ring
->ims_val
= E1000_IMS_TXQ0
;
2015 if (tx_ring
->itr_val
)
2016 writel(1000000000 / (tx_ring
->itr_val
* 256),
2017 tx_ring
->itr_register
);
2019 writel(1, tx_ring
->itr_register
);
2020 adapter
->eiac_mask
|= tx_ring
->ims_val
;
2021 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 8);
2023 /* set vector for Other Causes, e.g. link changes */
2025 ivar
|= ((E1000_IVAR_INT_ALLOC_VALID
| vector
) << 16);
2026 if (rx_ring
->itr_val
)
2027 writel(1000000000 / (rx_ring
->itr_val
* 256),
2028 hw
->hw_addr
+ E1000_EITR_82574(vector
));
2030 writel(1, hw
->hw_addr
+ E1000_EITR_82574(vector
));
2032 /* Cause Tx interrupts on every write back */
2037 /* enable MSI-X PBA support */
2038 ctrl_ext
= er32(CTRL_EXT
);
2039 ctrl_ext
|= E1000_CTRL_EXT_PBA_CLR
;
2041 /* Auto-Mask Other interrupts upon ICR read */
2042 ew32(IAM
, ~E1000_EIAC_MASK_82574
| E1000_IMS_OTHER
);
2043 ctrl_ext
|= E1000_CTRL_EXT_EIAME
;
2044 ew32(CTRL_EXT
, ctrl_ext
);
2048 void e1000e_reset_interrupt_capability(struct e1000_adapter
*adapter
)
2050 if (adapter
->msix_entries
) {
2051 pci_disable_msix(adapter
->pdev
);
2052 kfree(adapter
->msix_entries
);
2053 adapter
->msix_entries
= NULL
;
2054 } else if (adapter
->flags
& FLAG_MSI_ENABLED
) {
2055 pci_disable_msi(adapter
->pdev
);
2056 adapter
->flags
&= ~FLAG_MSI_ENABLED
;
2061 * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
2063 * Attempt to configure interrupts using the best available
2064 * capabilities of the hardware and kernel.
2066 void e1000e_set_interrupt_capability(struct e1000_adapter
*adapter
)
2071 switch (adapter
->int_mode
) {
2072 case E1000E_INT_MODE_MSIX
:
2073 if (adapter
->flags
& FLAG_HAS_MSIX
) {
2074 adapter
->num_vectors
= 3; /* RxQ0, TxQ0 and other */
2075 adapter
->msix_entries
= kcalloc(adapter
->num_vectors
,
2079 if (adapter
->msix_entries
) {
2080 struct e1000_adapter
*a
= adapter
;
2082 for (i
= 0; i
< adapter
->num_vectors
; i
++)
2083 adapter
->msix_entries
[i
].entry
= i
;
2085 err
= pci_enable_msix_range(a
->pdev
,
2092 /* MSI-X failed, so fall through and try MSI */
2093 e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n");
2094 e1000e_reset_interrupt_capability(adapter
);
2096 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
2098 case E1000E_INT_MODE_MSI
:
2099 if (!pci_enable_msi(adapter
->pdev
)) {
2100 adapter
->flags
|= FLAG_MSI_ENABLED
;
2102 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2103 e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n");
2106 case E1000E_INT_MODE_LEGACY
:
2107 /* Don't do anything; this is the system default */
2111 /* store the number of vectors being used */
2112 adapter
->num_vectors
= 1;
2116 * e1000_request_msix - Initialize MSI-X interrupts
2118 * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
2121 static int e1000_request_msix(struct e1000_adapter
*adapter
)
2123 struct net_device
*netdev
= adapter
->netdev
;
2124 int err
= 0, vector
= 0;
2126 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
2127 snprintf(adapter
->rx_ring
->name
,
2128 sizeof(adapter
->rx_ring
->name
) - 1,
2129 "%s-rx-0", netdev
->name
);
2131 memcpy(adapter
->rx_ring
->name
, netdev
->name
, IFNAMSIZ
);
2132 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2133 e1000_intr_msix_rx
, 0, adapter
->rx_ring
->name
,
2137 adapter
->rx_ring
->itr_register
= adapter
->hw
.hw_addr
+
2138 E1000_EITR_82574(vector
);
2139 adapter
->rx_ring
->itr_val
= adapter
->itr
;
2142 if (strlen(netdev
->name
) < (IFNAMSIZ
- 5))
2143 snprintf(adapter
->tx_ring
->name
,
2144 sizeof(adapter
->tx_ring
->name
) - 1,
2145 "%s-tx-0", netdev
->name
);
2147 memcpy(adapter
->tx_ring
->name
, netdev
->name
, IFNAMSIZ
);
2148 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2149 e1000_intr_msix_tx
, 0, adapter
->tx_ring
->name
,
2153 adapter
->tx_ring
->itr_register
= adapter
->hw
.hw_addr
+
2154 E1000_EITR_82574(vector
);
2155 adapter
->tx_ring
->itr_val
= adapter
->itr
;
2158 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2159 e1000_msix_other
, 0, netdev
->name
, netdev
);
2163 e1000_configure_msix(adapter
);
2169 * e1000_request_irq - initialize interrupts
2171 * Attempts to configure interrupts using the best available
2172 * capabilities of the hardware and kernel.
2174 static int e1000_request_irq(struct e1000_adapter
*adapter
)
2176 struct net_device
*netdev
= adapter
->netdev
;
2179 if (adapter
->msix_entries
) {
2180 err
= e1000_request_msix(adapter
);
2183 /* fall back to MSI */
2184 e1000e_reset_interrupt_capability(adapter
);
2185 adapter
->int_mode
= E1000E_INT_MODE_MSI
;
2186 e1000e_set_interrupt_capability(adapter
);
2188 if (adapter
->flags
& FLAG_MSI_ENABLED
) {
2189 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi
, 0,
2190 netdev
->name
, netdev
);
2194 /* fall back to legacy interrupt */
2195 e1000e_reset_interrupt_capability(adapter
);
2196 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
2199 err
= request_irq(adapter
->pdev
->irq
, e1000_intr
, IRQF_SHARED
,
2200 netdev
->name
, netdev
);
2202 e_err("Unable to allocate interrupt, Error: %d\n", err
);
2207 static void e1000_free_irq(struct e1000_adapter
*adapter
)
2209 struct net_device
*netdev
= adapter
->netdev
;
2211 if (adapter
->msix_entries
) {
2214 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2217 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2220 /* Other Causes interrupt vector */
2221 free_irq(adapter
->msix_entries
[vector
].vector
, netdev
);
2225 free_irq(adapter
->pdev
->irq
, netdev
);
2229 * e1000_irq_disable - Mask off interrupt generation on the NIC
2231 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
2233 struct e1000_hw
*hw
= &adapter
->hw
;
2236 if (adapter
->msix_entries
)
2237 ew32(EIAC_82574
, 0);
2240 if (adapter
->msix_entries
) {
2243 for (i
= 0; i
< adapter
->num_vectors
; i
++)
2244 synchronize_irq(adapter
->msix_entries
[i
].vector
);
2246 synchronize_irq(adapter
->pdev
->irq
);
2251 * e1000_irq_enable - Enable default interrupt generation settings
2253 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
2255 struct e1000_hw
*hw
= &adapter
->hw
;
2257 if (adapter
->msix_entries
) {
2258 ew32(EIAC_82574
, adapter
->eiac_mask
& E1000_EIAC_MASK_82574
);
2259 ew32(IMS
, adapter
->eiac_mask
| E1000_IMS_OTHER
| E1000_IMS_LSC
);
2260 } else if (hw
->mac
.type
== e1000_pch_lpt
) {
2261 ew32(IMS
, IMS_ENABLE_MASK
| E1000_IMS_ECCER
);
2263 ew32(IMS
, IMS_ENABLE_MASK
);
2269 * e1000e_get_hw_control - get control of the h/w from f/w
2270 * @adapter: address of board private structure
2272 * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2273 * For ASF and Pass Through versions of f/w this means that
2274 * the driver is loaded. For AMT version (only with 82573)
2275 * of the f/w this means that the network i/f is open.
2277 void e1000e_get_hw_control(struct e1000_adapter
*adapter
)
2279 struct e1000_hw
*hw
= &adapter
->hw
;
2283 /* Let firmware know the driver has taken over */
2284 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2286 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
2287 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2288 ctrl_ext
= er32(CTRL_EXT
);
2289 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
2294 * e1000e_release_hw_control - release control of the h/w to f/w
2295 * @adapter: address of board private structure
2297 * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit.
2298 * For ASF and Pass Through versions of f/w this means that the
2299 * driver is no longer loaded. For AMT version (only with 82573) i
2300 * of the f/w this means that the network i/f is closed.
2303 void e1000e_release_hw_control(struct e1000_adapter
*adapter
)
2305 struct e1000_hw
*hw
= &adapter
->hw
;
2309 /* Let firmware taken over control of h/w */
2310 if (adapter
->flags
& FLAG_HAS_SWSM_ON_LOAD
) {
2312 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
2313 } else if (adapter
->flags
& FLAG_HAS_CTRLEXT_ON_LOAD
) {
2314 ctrl_ext
= er32(CTRL_EXT
);
2315 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
2320 * e1000_alloc_ring_dma - allocate memory for a ring structure
2322 static int e1000_alloc_ring_dma(struct e1000_adapter
*adapter
,
2323 struct e1000_ring
*ring
)
2325 struct pci_dev
*pdev
= adapter
->pdev
;
2327 ring
->desc
= dma_alloc_coherent(&pdev
->dev
, ring
->size
, &ring
->dma
,
2336 * e1000e_setup_tx_resources - allocate Tx resources (Descriptors)
2337 * @tx_ring: Tx descriptor ring
2339 * Return 0 on success, negative on failure
2341 int e1000e_setup_tx_resources(struct e1000_ring
*tx_ring
)
2343 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2344 int err
= -ENOMEM
, size
;
2346 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2347 tx_ring
->buffer_info
= vzalloc(size
);
2348 if (!tx_ring
->buffer_info
)
2351 /* round up to nearest 4K */
2352 tx_ring
->size
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2353 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
2355 err
= e1000_alloc_ring_dma(adapter
, tx_ring
);
2359 tx_ring
->next_to_use
= 0;
2360 tx_ring
->next_to_clean
= 0;
2364 vfree(tx_ring
->buffer_info
);
2365 e_err("Unable to allocate memory for the transmit descriptor ring\n");
2370 * e1000e_setup_rx_resources - allocate Rx resources (Descriptors)
2371 * @rx_ring: Rx descriptor ring
2373 * Returns 0 on success, negative on failure
2375 int e1000e_setup_rx_resources(struct e1000_ring
*rx_ring
)
2377 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
2378 struct e1000_buffer
*buffer_info
;
2379 int i
, size
, desc_len
, err
= -ENOMEM
;
2381 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2382 rx_ring
->buffer_info
= vzalloc(size
);
2383 if (!rx_ring
->buffer_info
)
2386 for (i
= 0; i
< rx_ring
->count
; i
++) {
2387 buffer_info
= &rx_ring
->buffer_info
[i
];
2388 buffer_info
->ps_pages
= kcalloc(PS_PAGE_BUFFERS
,
2389 sizeof(struct e1000_ps_page
),
2391 if (!buffer_info
->ps_pages
)
2395 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
2397 /* Round up to nearest 4K */
2398 rx_ring
->size
= rx_ring
->count
* desc_len
;
2399 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
2401 err
= e1000_alloc_ring_dma(adapter
, rx_ring
);
2405 rx_ring
->next_to_clean
= 0;
2406 rx_ring
->next_to_use
= 0;
2407 rx_ring
->rx_skb_top
= NULL
;
2412 for (i
= 0; i
< rx_ring
->count
; i
++) {
2413 buffer_info
= &rx_ring
->buffer_info
[i
];
2414 kfree(buffer_info
->ps_pages
);
2417 vfree(rx_ring
->buffer_info
);
2418 e_err("Unable to allocate memory for the receive descriptor ring\n");
2423 * e1000_clean_tx_ring - Free Tx Buffers
2424 * @tx_ring: Tx descriptor ring
2426 static void e1000_clean_tx_ring(struct e1000_ring
*tx_ring
)
2428 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2429 struct e1000_buffer
*buffer_info
;
2433 for (i
= 0; i
< tx_ring
->count
; i
++) {
2434 buffer_info
= &tx_ring
->buffer_info
[i
];
2435 e1000_put_txbuf(tx_ring
, buffer_info
);
2438 netdev_reset_queue(adapter
->netdev
);
2439 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2440 memset(tx_ring
->buffer_info
, 0, size
);
2442 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2444 tx_ring
->next_to_use
= 0;
2445 tx_ring
->next_to_clean
= 0;
2447 writel(0, tx_ring
->head
);
2448 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
2449 e1000e_update_tdt_wa(tx_ring
, 0);
2451 writel(0, tx_ring
->tail
);
2455 * e1000e_free_tx_resources - Free Tx Resources per Queue
2456 * @tx_ring: Tx descriptor ring
2458 * Free all transmit software resources
2460 void e1000e_free_tx_resources(struct e1000_ring
*tx_ring
)
2462 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
2463 struct pci_dev
*pdev
= adapter
->pdev
;
2465 e1000_clean_tx_ring(tx_ring
);
2467 vfree(tx_ring
->buffer_info
);
2468 tx_ring
->buffer_info
= NULL
;
2470 dma_free_coherent(&pdev
->dev
, tx_ring
->size
, tx_ring
->desc
,
2472 tx_ring
->desc
= NULL
;
2476 * e1000e_free_rx_resources - Free Rx Resources
2477 * @rx_ring: Rx descriptor ring
2479 * Free all receive software resources
2481 void e1000e_free_rx_resources(struct e1000_ring
*rx_ring
)
2483 struct e1000_adapter
*adapter
= rx_ring
->adapter
;
2484 struct pci_dev
*pdev
= adapter
->pdev
;
2487 e1000_clean_rx_ring(rx_ring
);
2489 for (i
= 0; i
< rx_ring
->count
; i
++)
2490 kfree(rx_ring
->buffer_info
[i
].ps_pages
);
2492 vfree(rx_ring
->buffer_info
);
2493 rx_ring
->buffer_info
= NULL
;
2495 dma_free_coherent(&pdev
->dev
, rx_ring
->size
, rx_ring
->desc
,
2497 rx_ring
->desc
= NULL
;
2501 * e1000_update_itr - update the dynamic ITR value based on statistics
2502 * @adapter: pointer to adapter
2503 * @itr_setting: current adapter->itr
2504 * @packets: the number of packets during this measurement interval
2505 * @bytes: the number of bytes during this measurement interval
2507 * Stores a new ITR value based on packets and byte
2508 * counts during the last interrupt. The advantage of per interrupt
2509 * computation is faster updates and more accurate ITR for the current
2510 * traffic pattern. Constants in this function were computed
2511 * based on theoretical maximum wire speed and thresholds were set based
2512 * on testing data as well as attempting to minimize response time
2513 * while increasing bulk throughput. This functionality is controlled
2514 * by the InterruptThrottleRate module parameter.
2516 static unsigned int e1000_update_itr(u16 itr_setting
, int packets
, int bytes
)
2518 unsigned int retval
= itr_setting
;
2523 switch (itr_setting
) {
2524 case lowest_latency
:
2525 /* handle TSO and jumbo frames */
2526 if (bytes
/ packets
> 8000)
2527 retval
= bulk_latency
;
2528 else if ((packets
< 5) && (bytes
> 512))
2529 retval
= low_latency
;
2531 case low_latency
: /* 50 usec aka 20000 ints/s */
2532 if (bytes
> 10000) {
2533 /* this if handles the TSO accounting */
2534 if (bytes
/ packets
> 8000)
2535 retval
= bulk_latency
;
2536 else if ((packets
< 10) || ((bytes
/ packets
) > 1200))
2537 retval
= bulk_latency
;
2538 else if ((packets
> 35))
2539 retval
= lowest_latency
;
2540 } else if (bytes
/ packets
> 2000) {
2541 retval
= bulk_latency
;
2542 } else if (packets
<= 2 && bytes
< 512) {
2543 retval
= lowest_latency
;
2546 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2547 if (bytes
> 25000) {
2549 retval
= low_latency
;
2550 } else if (bytes
< 6000) {
2551 retval
= low_latency
;
2559 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2562 u32 new_itr
= adapter
->itr
;
2564 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2565 if (adapter
->link_speed
!= SPEED_1000
) {
2571 if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
2576 adapter
->tx_itr
= e1000_update_itr(adapter
->tx_itr
,
2577 adapter
->total_tx_packets
,
2578 adapter
->total_tx_bytes
);
2579 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2580 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2581 adapter
->tx_itr
= low_latency
;
2583 adapter
->rx_itr
= e1000_update_itr(adapter
->rx_itr
,
2584 adapter
->total_rx_packets
,
2585 adapter
->total_rx_bytes
);
2586 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2587 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2588 adapter
->rx_itr
= low_latency
;
2590 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2592 /* counts and packets in update_itr are dependent on these numbers */
2593 switch (current_itr
) {
2594 case lowest_latency
:
2598 new_itr
= 20000; /* aka hwitr = ~200 */
2608 if (new_itr
!= adapter
->itr
) {
2609 /* this attempts to bias the interrupt rate towards Bulk
2610 * by adding intermediate steps when interrupt rate is
2613 new_itr
= new_itr
> adapter
->itr
?
2614 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) : new_itr
;
2615 adapter
->itr
= new_itr
;
2616 adapter
->rx_ring
->itr_val
= new_itr
;
2617 if (adapter
->msix_entries
)
2618 adapter
->rx_ring
->set_itr
= 1;
2620 e1000e_write_itr(adapter
, new_itr
);
2625 * e1000e_write_itr - write the ITR value to the appropriate registers
2626 * @adapter: address of board private structure
2627 * @itr: new ITR value to program
2629 * e1000e_write_itr determines if the adapter is in MSI-X mode
2630 * and, if so, writes the EITR registers with the ITR value.
2631 * Otherwise, it writes the ITR value into the ITR register.
2633 void e1000e_write_itr(struct e1000_adapter
*adapter
, u32 itr
)
2635 struct e1000_hw
*hw
= &adapter
->hw
;
2636 u32 new_itr
= itr
? 1000000000 / (itr
* 256) : 0;
2638 if (adapter
->msix_entries
) {
2641 for (vector
= 0; vector
< adapter
->num_vectors
; vector
++)
2642 writel(new_itr
, hw
->hw_addr
+ E1000_EITR_82574(vector
));
2649 * e1000_alloc_queues - Allocate memory for all rings
2650 * @adapter: board private structure to initialize
2652 static int e1000_alloc_queues(struct e1000_adapter
*adapter
)
2654 int size
= sizeof(struct e1000_ring
);
2656 adapter
->tx_ring
= kzalloc(size
, GFP_KERNEL
);
2657 if (!adapter
->tx_ring
)
2659 adapter
->tx_ring
->count
= adapter
->tx_ring_count
;
2660 adapter
->tx_ring
->adapter
= adapter
;
2662 adapter
->rx_ring
= kzalloc(size
, GFP_KERNEL
);
2663 if (!adapter
->rx_ring
)
2665 adapter
->rx_ring
->count
= adapter
->rx_ring_count
;
2666 adapter
->rx_ring
->adapter
= adapter
;
2670 e_err("Unable to allocate memory for queues\n");
2671 kfree(adapter
->rx_ring
);
2672 kfree(adapter
->tx_ring
);
2677 * e1000e_poll - NAPI Rx polling callback
2678 * @napi: struct associated with this polling callback
2679 * @weight: number of packets driver is allowed to process this poll
2681 static int e1000e_poll(struct napi_struct
*napi
, int weight
)
2683 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
,
2685 struct e1000_hw
*hw
= &adapter
->hw
;
2686 struct net_device
*poll_dev
= adapter
->netdev
;
2687 int tx_cleaned
= 1, work_done
= 0;
2689 adapter
= netdev_priv(poll_dev
);
2691 if (!adapter
->msix_entries
||
2692 (adapter
->rx_ring
->ims_val
& adapter
->tx_ring
->ims_val
))
2693 tx_cleaned
= e1000_clean_tx_irq(adapter
->tx_ring
);
2695 adapter
->clean_rx(adapter
->rx_ring
, &work_done
, weight
);
2700 /* If weight not fully consumed, exit the polling mode */
2701 if (work_done
< weight
) {
2702 if (adapter
->itr_setting
& 3)
2703 e1000_set_itr(adapter
);
2704 napi_complete(napi
);
2705 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
2706 if (adapter
->msix_entries
)
2707 ew32(IMS
, adapter
->rx_ring
->ims_val
);
2709 e1000_irq_enable(adapter
);
2716 static int e1000_vlan_rx_add_vid(struct net_device
*netdev
,
2717 __always_unused __be16 proto
, u16 vid
)
2719 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2720 struct e1000_hw
*hw
= &adapter
->hw
;
2723 /* don't update vlan cookie if already programmed */
2724 if ((adapter
->hw
.mng_cookie
.status
&
2725 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2726 (vid
== adapter
->mng_vlan_id
))
2729 /* add VID to filter table */
2730 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2731 index
= (vid
>> 5) & 0x7F;
2732 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2733 vfta
|= (1 << (vid
& 0x1F));
2734 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2737 set_bit(vid
, adapter
->active_vlans
);
2742 static int e1000_vlan_rx_kill_vid(struct net_device
*netdev
,
2743 __always_unused __be16 proto
, u16 vid
)
2745 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2746 struct e1000_hw
*hw
= &adapter
->hw
;
2749 if ((adapter
->hw
.mng_cookie
.status
&
2750 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) &&
2751 (vid
== adapter
->mng_vlan_id
)) {
2752 /* release control to f/w */
2753 e1000e_release_hw_control(adapter
);
2757 /* remove VID from filter table */
2758 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2759 index
= (vid
>> 5) & 0x7F;
2760 vfta
= E1000_READ_REG_ARRAY(hw
, E1000_VFTA
, index
);
2761 vfta
&= ~(1 << (vid
& 0x1F));
2762 hw
->mac
.ops
.write_vfta(hw
, index
, vfta
);
2765 clear_bit(vid
, adapter
->active_vlans
);
2771 * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
2772 * @adapter: board private structure to initialize
2774 static void e1000e_vlan_filter_disable(struct e1000_adapter
*adapter
)
2776 struct net_device
*netdev
= adapter
->netdev
;
2777 struct e1000_hw
*hw
= &adapter
->hw
;
2780 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2781 /* disable VLAN receive filtering */
2783 rctl
&= ~(E1000_RCTL_VFE
| E1000_RCTL_CFIEN
);
2786 if (adapter
->mng_vlan_id
!= (u16
)E1000_MNG_VLAN_NONE
) {
2787 e1000_vlan_rx_kill_vid(netdev
, htons(ETH_P_8021Q
),
2788 adapter
->mng_vlan_id
);
2789 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
2795 * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
2796 * @adapter: board private structure to initialize
2798 static void e1000e_vlan_filter_enable(struct e1000_adapter
*adapter
)
2800 struct e1000_hw
*hw
= &adapter
->hw
;
2803 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
) {
2804 /* enable VLAN receive filtering */
2806 rctl
|= E1000_RCTL_VFE
;
2807 rctl
&= ~E1000_RCTL_CFIEN
;
2813 * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
2814 * @adapter: board private structure to initialize
2816 static void e1000e_vlan_strip_disable(struct e1000_adapter
*adapter
)
2818 struct e1000_hw
*hw
= &adapter
->hw
;
2821 /* disable VLAN tag insert/strip */
2823 ctrl
&= ~E1000_CTRL_VME
;
2828 * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
2829 * @adapter: board private structure to initialize
2831 static void e1000e_vlan_strip_enable(struct e1000_adapter
*adapter
)
2833 struct e1000_hw
*hw
= &adapter
->hw
;
2836 /* enable VLAN tag insert/strip */
2838 ctrl
|= E1000_CTRL_VME
;
2842 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
2844 struct net_device
*netdev
= adapter
->netdev
;
2845 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
2846 u16 old_vid
= adapter
->mng_vlan_id
;
2848 if (adapter
->hw
.mng_cookie
.status
& E1000_MNG_DHCP_COOKIE_STATUS_VLAN
) {
2849 e1000_vlan_rx_add_vid(netdev
, htons(ETH_P_8021Q
), vid
);
2850 adapter
->mng_vlan_id
= vid
;
2853 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) && (vid
!= old_vid
))
2854 e1000_vlan_rx_kill_vid(netdev
, htons(ETH_P_8021Q
), old_vid
);
2857 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
2861 e1000_vlan_rx_add_vid(adapter
->netdev
, htons(ETH_P_8021Q
), 0);
2863 for_each_set_bit(vid
, adapter
->active_vlans
, VLAN_N_VID
)
2864 e1000_vlan_rx_add_vid(adapter
->netdev
, htons(ETH_P_8021Q
), vid
);
2867 static void e1000_init_manageability_pt(struct e1000_adapter
*adapter
)
2869 struct e1000_hw
*hw
= &adapter
->hw
;
2870 u32 manc
, manc2h
, mdef
, i
, j
;
2872 if (!(adapter
->flags
& FLAG_MNG_PT_ENABLED
))
2877 /* enable receiving management packets to the host. this will probably
2878 * generate destination unreachable messages from the host OS, but
2879 * the packets will be handled on SMBUS
2881 manc
|= E1000_MANC_EN_MNG2HOST
;
2882 manc2h
= er32(MANC2H
);
2884 switch (hw
->mac
.type
) {
2886 manc2h
|= (E1000_MANC2H_PORT_623
| E1000_MANC2H_PORT_664
);
2890 /* Check if IPMI pass-through decision filter already exists;
2893 for (i
= 0, j
= 0; i
< 8; i
++) {
2894 mdef
= er32(MDEF(i
));
2896 /* Ignore filters with anything other than IPMI ports */
2897 if (mdef
& ~(E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2900 /* Enable this decision filter in MANC2H */
2907 if (j
== (E1000_MDEF_PORT_623
| E1000_MDEF_PORT_664
))
2910 /* Create new decision filter in an empty filter */
2911 for (i
= 0, j
= 0; i
< 8; i
++)
2912 if (er32(MDEF(i
)) == 0) {
2913 ew32(MDEF(i
), (E1000_MDEF_PORT_623
|
2914 E1000_MDEF_PORT_664
));
2921 e_warn("Unable to create IPMI pass-through filter\n");
2925 ew32(MANC2H
, manc2h
);
2930 * e1000_configure_tx - Configure Transmit Unit after Reset
2931 * @adapter: board private structure
2933 * Configure the Tx unit of the MAC after a reset.
2935 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
2937 struct e1000_hw
*hw
= &adapter
->hw
;
2938 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
2940 u32 tdlen
, tctl
, tarc
;
2942 /* Setup the HW Tx Head and Tail descriptor pointers */
2943 tdba
= tx_ring
->dma
;
2944 tdlen
= tx_ring
->count
* sizeof(struct e1000_tx_desc
);
2945 ew32(TDBAL(0), (tdba
& DMA_BIT_MASK(32)));
2946 ew32(TDBAH(0), (tdba
>> 32));
2947 ew32(TDLEN(0), tdlen
);
2950 tx_ring
->head
= adapter
->hw
.hw_addr
+ E1000_TDH(0);
2951 tx_ring
->tail
= adapter
->hw
.hw_addr
+ E1000_TDT(0);
2953 /* Set the Tx Interrupt Delay register */
2954 ew32(TIDV
, adapter
->tx_int_delay
);
2955 /* Tx irq moderation */
2956 ew32(TADV
, adapter
->tx_abs_int_delay
);
2958 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
2959 u32 txdctl
= er32(TXDCTL(0));
2961 txdctl
&= ~(E1000_TXDCTL_PTHRESH
| E1000_TXDCTL_HTHRESH
|
2962 E1000_TXDCTL_WTHRESH
);
2963 /* set up some performance related parameters to encourage the
2964 * hardware to use the bus more efficiently in bursts, depends
2965 * on the tx_int_delay to be enabled,
2966 * wthresh = 1 ==> burst write is disabled to avoid Tx stalls
2967 * hthresh = 1 ==> prefetch when one or more available
2968 * pthresh = 0x1f ==> prefetch if internal cache 31 or less
2969 * BEWARE: this seems to work but should be considered first if
2970 * there are Tx hangs or other Tx related bugs
2972 txdctl
|= E1000_TXDCTL_DMA_BURST_ENABLE
;
2973 ew32(TXDCTL(0), txdctl
);
2975 /* erratum work around: set txdctl the same for both queues */
2976 ew32(TXDCTL(1), er32(TXDCTL(0)));
2978 /* Program the Transmit Control Register */
2980 tctl
&= ~E1000_TCTL_CT
;
2981 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
2982 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
2984 if (adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) {
2985 tarc
= er32(TARC(0));
2986 /* set the speed mode bit, we'll clear it if we're not at
2987 * gigabit link later
2989 #define SPEED_MODE_BIT (1 << 21)
2990 tarc
|= SPEED_MODE_BIT
;
2991 ew32(TARC(0), tarc
);
2994 /* errata: program both queues to unweighted RR */
2995 if (adapter
->flags
& FLAG_TARC_SET_BIT_ZERO
) {
2996 tarc
= er32(TARC(0));
2998 ew32(TARC(0), tarc
);
2999 tarc
= er32(TARC(1));
3001 ew32(TARC(1), tarc
);
3004 /* Setup Transmit Descriptor Settings for eop descriptor */
3005 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
3007 /* only set IDE if we are delaying interrupts using the timers */
3008 if (adapter
->tx_int_delay
)
3009 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
3011 /* enable Report Status bit */
3012 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
3016 hw
->mac
.ops
.config_collision_dist(hw
);
3020 * e1000_setup_rctl - configure the receive control registers
3021 * @adapter: Board private structure
3023 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
3024 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
3025 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
3027 struct e1000_hw
*hw
= &adapter
->hw
;
3031 /* Workaround Si errata on PCHx - configure jumbo frame flow.
3032 * If jumbo frames not set, program related MAC/PHY registers
3035 if (hw
->mac
.type
>= e1000_pch2lan
) {
3038 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
)
3039 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, true);
3041 ret_val
= e1000_lv_jumbo_workaround_ich8lan(hw
, false);
3044 e_dbg("failed to enable|disable jumbo frame workaround mode\n");
3047 /* Program MC offset vector base */
3049 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
3050 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
3051 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
3052 (adapter
->hw
.mac
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
3054 /* Do not Store bad packets */
3055 rctl
&= ~E1000_RCTL_SBP
;
3057 /* Enable Long Packet receive */
3058 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
3059 rctl
&= ~E1000_RCTL_LPE
;
3061 rctl
|= E1000_RCTL_LPE
;
3063 /* Some systems expect that the CRC is included in SMBUS traffic. The
3064 * hardware strips the CRC before sending to both SMBUS (BMC) and to
3065 * host memory when this is enabled
3067 if (adapter
->flags2
& FLAG2_CRC_STRIPPING
)
3068 rctl
|= E1000_RCTL_SECRC
;
3070 /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
3071 if ((hw
->phy
.type
== e1000_phy_82577
) && (rctl
& E1000_RCTL_LPE
)) {
3074 e1e_rphy(hw
, PHY_REG(770, 26), &phy_data
);
3076 phy_data
|= (1 << 2);
3077 e1e_wphy(hw
, PHY_REG(770, 26), phy_data
);
3079 e1e_rphy(hw
, 22, &phy_data
);
3081 phy_data
|= (1 << 14);
3082 e1e_wphy(hw
, 0x10, 0x2823);
3083 e1e_wphy(hw
, 0x11, 0x0003);
3084 e1e_wphy(hw
, 22, phy_data
);
3087 /* Setup buffer sizes */
3088 rctl
&= ~E1000_RCTL_SZ_4096
;
3089 rctl
|= E1000_RCTL_BSEX
;
3090 switch (adapter
->rx_buffer_len
) {
3093 rctl
|= E1000_RCTL_SZ_2048
;
3094 rctl
&= ~E1000_RCTL_BSEX
;
3097 rctl
|= E1000_RCTL_SZ_4096
;
3100 rctl
|= E1000_RCTL_SZ_8192
;
3103 rctl
|= E1000_RCTL_SZ_16384
;
3107 /* Enable Extended Status in all Receive Descriptors */
3108 rfctl
= er32(RFCTL
);
3109 rfctl
|= E1000_RFCTL_EXTEN
;
3112 /* 82571 and greater support packet-split where the protocol
3113 * header is placed in skb->data and the packet data is
3114 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
3115 * In the case of a non-split, skb->data is linearly filled,
3116 * followed by the page buffers. Therefore, skb->data is
3117 * sized to hold the largest protocol header.
3119 * allocations using alloc_page take too long for regular MTU
3120 * so only enable packet split for jumbo frames
3122 * Using pages when the page size is greater than 16k wastes
3123 * a lot of memory, since we allocate 3 pages at all times
3126 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
3127 if ((pages
<= 3) && (PAGE_SIZE
<= 16384) && (rctl
& E1000_RCTL_LPE
))
3128 adapter
->rx_ps_pages
= pages
;
3130 adapter
->rx_ps_pages
= 0;
3132 if (adapter
->rx_ps_pages
) {
3135 /* Enable Packet split descriptors */
3136 rctl
|= E1000_RCTL_DTYP_PS
;
3138 psrctl
|= adapter
->rx_ps_bsize0
>> E1000_PSRCTL_BSIZE0_SHIFT
;
3140 switch (adapter
->rx_ps_pages
) {
3142 psrctl
|= PAGE_SIZE
<< E1000_PSRCTL_BSIZE3_SHIFT
;
3145 psrctl
|= PAGE_SIZE
<< E1000_PSRCTL_BSIZE2_SHIFT
;
3148 psrctl
|= PAGE_SIZE
>> E1000_PSRCTL_BSIZE1_SHIFT
;
3152 ew32(PSRCTL
, psrctl
);
3155 /* This is useful for sniffing bad packets. */
3156 if (adapter
->netdev
->features
& NETIF_F_RXALL
) {
3157 /* UPE and MPE will be handled by normal PROMISC logic
3158 * in e1000e_set_rx_mode
3160 rctl
|= (E1000_RCTL_SBP
| /* Receive bad packets */
3161 E1000_RCTL_BAM
| /* RX All Bcast Pkts */
3162 E1000_RCTL_PMCF
); /* RX All MAC Ctrl Pkts */
3164 rctl
&= ~(E1000_RCTL_VFE
| /* Disable VLAN filter */
3165 E1000_RCTL_DPF
| /* Allow filtered pause */
3166 E1000_RCTL_CFIEN
); /* Dis VLAN CFIEN Filter */
3167 /* Do not mess with E1000_CTRL_VME, it affects transmit as well,
3168 * and that breaks VLANs.
3173 /* just started the receive unit, no need to restart */
3174 adapter
->flags
&= ~FLAG_RESTART_NOW
;
3178 * e1000_configure_rx - Configure Receive Unit after Reset
3179 * @adapter: board private structure
3181 * Configure the Rx unit of the MAC after a reset.
3183 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
3185 struct e1000_hw
*hw
= &adapter
->hw
;
3186 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
3188 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
3190 if (adapter
->rx_ps_pages
) {
3191 /* this is a 32 byte descriptor */
3192 rdlen
= rx_ring
->count
*
3193 sizeof(union e1000_rx_desc_packet_split
);
3194 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
3195 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
3196 } else if (adapter
->netdev
->mtu
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3197 rdlen
= rx_ring
->count
* sizeof(union e1000_rx_desc_extended
);
3198 adapter
->clean_rx
= e1000_clean_jumbo_rx_irq
;
3199 adapter
->alloc_rx_buf
= e1000_alloc_jumbo_rx_buffers
;
3201 rdlen
= rx_ring
->count
* sizeof(union e1000_rx_desc_extended
);
3202 adapter
->clean_rx
= e1000_clean_rx_irq
;
3203 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
3206 /* disable receives while setting up the descriptors */
3208 if (!(adapter
->flags2
& FLAG2_NO_DISABLE_RX
))
3209 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3211 usleep_range(10000, 20000);
3213 if (adapter
->flags2
& FLAG2_DMA_BURST
) {
3214 /* set the writeback threshold (only takes effect if the RDTR
3215 * is set). set GRAN=1 and write back up to 0x4 worth, and
3216 * enable prefetching of 0x20 Rx descriptors
3222 ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE
);
3223 ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE
);
3225 /* override the delay timers for enabling bursting, only if
3226 * the value was not set by the user via module options
3228 if (adapter
->rx_int_delay
== DEFAULT_RDTR
)
3229 adapter
->rx_int_delay
= BURST_RDTR
;
3230 if (adapter
->rx_abs_int_delay
== DEFAULT_RADV
)
3231 adapter
->rx_abs_int_delay
= BURST_RADV
;
3234 /* set the Receive Delay Timer Register */
3235 ew32(RDTR
, adapter
->rx_int_delay
);
3237 /* irq moderation */
3238 ew32(RADV
, adapter
->rx_abs_int_delay
);
3239 if ((adapter
->itr_setting
!= 0) && (adapter
->itr
!= 0))
3240 e1000e_write_itr(adapter
, adapter
->itr
);
3242 ctrl_ext
= er32(CTRL_EXT
);
3243 /* Auto-Mask interrupts upon ICR access */
3244 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
3245 ew32(IAM
, 0xffffffff);
3246 ew32(CTRL_EXT
, ctrl_ext
);
3249 /* Setup the HW Rx Head and Tail Descriptor Pointers and
3250 * the Base and Length of the Rx Descriptor Ring
3252 rdba
= rx_ring
->dma
;
3253 ew32(RDBAL(0), (rdba
& DMA_BIT_MASK(32)));
3254 ew32(RDBAH(0), (rdba
>> 32));
3255 ew32(RDLEN(0), rdlen
);
3258 rx_ring
->head
= adapter
->hw
.hw_addr
+ E1000_RDH(0);
3259 rx_ring
->tail
= adapter
->hw
.hw_addr
+ E1000_RDT(0);
3261 /* Enable Receive Checksum Offload for TCP and UDP */
3262 rxcsum
= er32(RXCSUM
);
3263 if (adapter
->netdev
->features
& NETIF_F_RXCSUM
)
3264 rxcsum
|= E1000_RXCSUM_TUOFL
;
3266 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
3267 ew32(RXCSUM
, rxcsum
);
3269 /* With jumbo frames, excessive C-state transition latencies result
3270 * in dropped transactions.
3272 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3274 ((er32(PBA
) & E1000_PBA_RXA_MASK
) * 1024 -
3275 adapter
->max_frame_size
) * 8 / 1000;
3277 if (adapter
->flags
& FLAG_IS_ICH
) {
3278 u32 rxdctl
= er32(RXDCTL(0));
3280 ew32(RXDCTL(0), rxdctl
| 0x3);
3283 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
, lat
);
3285 pm_qos_update_request(&adapter
->netdev
->pm_qos_req
,
3286 PM_QOS_DEFAULT_VALUE
);
3289 /* Enable Receives */
3294 * e1000e_write_mc_addr_list - write multicast addresses to MTA
3295 * @netdev: network interface device structure
3297 * Writes multicast address list to the MTA hash table.
3298 * Returns: -ENOMEM on failure
3299 * 0 on no addresses written
3300 * X on writing X addresses to MTA
3302 static int e1000e_write_mc_addr_list(struct net_device
*netdev
)
3304 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3305 struct e1000_hw
*hw
= &adapter
->hw
;
3306 struct netdev_hw_addr
*ha
;
3310 if (netdev_mc_empty(netdev
)) {
3311 /* nothing to program, so clear mc list */
3312 hw
->mac
.ops
.update_mc_addr_list(hw
, NULL
, 0);
3316 mta_list
= kzalloc(netdev_mc_count(netdev
) * ETH_ALEN
, GFP_ATOMIC
);
3320 /* update_mc_addr_list expects a packed array of only addresses. */
3322 netdev_for_each_mc_addr(ha
, netdev
)
3323 memcpy(mta_list
+ (i
++ * ETH_ALEN
), ha
->addr
, ETH_ALEN
);
3325 hw
->mac
.ops
.update_mc_addr_list(hw
, mta_list
, i
);
3328 return netdev_mc_count(netdev
);
3332 * e1000e_write_uc_addr_list - write unicast addresses to RAR table
3333 * @netdev: network interface device structure
3335 * Writes unicast address list to the RAR table.
3336 * Returns: -ENOMEM on failure/insufficient address space
3337 * 0 on no addresses written
3338 * X on writing X addresses to the RAR table
3340 static int e1000e_write_uc_addr_list(struct net_device
*netdev
)
3342 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3343 struct e1000_hw
*hw
= &adapter
->hw
;
3344 unsigned int rar_entries
;
3347 rar_entries
= hw
->mac
.ops
.rar_get_count(hw
);
3349 /* save a rar entry for our hardware address */
3352 /* save a rar entry for the LAA workaround */
3353 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
)
3356 /* return ENOMEM indicating insufficient memory for addresses */
3357 if (netdev_uc_count(netdev
) > rar_entries
)
3360 if (!netdev_uc_empty(netdev
) && rar_entries
) {
3361 struct netdev_hw_addr
*ha
;
3363 /* write the addresses in reverse order to avoid write
3366 netdev_for_each_uc_addr(ha
, netdev
) {
3371 rval
= hw
->mac
.ops
.rar_set(hw
, ha
->addr
, rar_entries
--);
3378 /* zero out the remaining RAR entries not used above */
3379 for (; rar_entries
> 0; rar_entries
--) {
3380 ew32(RAH(rar_entries
), 0);
3381 ew32(RAL(rar_entries
), 0);
3389 * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set
3390 * @netdev: network interface device structure
3392 * The ndo_set_rx_mode entry point is called whenever the unicast or multicast
3393 * address list or the network interface flags are updated. This routine is
3394 * responsible for configuring the hardware for proper unicast, multicast,
3395 * promiscuous mode, and all-multi behavior.
3397 static void e1000e_set_rx_mode(struct net_device
*netdev
)
3399 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3400 struct e1000_hw
*hw
= &adapter
->hw
;
3403 if (pm_runtime_suspended(netdev
->dev
.parent
))
3406 /* Check for Promiscuous and All Multicast modes */
3409 /* clear the affected bits */
3410 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3412 if (netdev
->flags
& IFF_PROMISC
) {
3413 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
3414 /* Do not hardware filter VLANs in promisc mode */
3415 e1000e_vlan_filter_disable(adapter
);
3419 if (netdev
->flags
& IFF_ALLMULTI
) {
3420 rctl
|= E1000_RCTL_MPE
;
3422 /* Write addresses to the MTA, if the attempt fails
3423 * then we should just turn on promiscuous mode so
3424 * that we can at least receive multicast traffic
3426 count
= e1000e_write_mc_addr_list(netdev
);
3428 rctl
|= E1000_RCTL_MPE
;
3430 e1000e_vlan_filter_enable(adapter
);
3431 /* Write addresses to available RAR registers, if there is not
3432 * sufficient space to store all the addresses then enable
3433 * unicast promiscuous mode
3435 count
= e1000e_write_uc_addr_list(netdev
);
3437 rctl
|= E1000_RCTL_UPE
;
3442 if (netdev
->features
& NETIF_F_HW_VLAN_CTAG_RX
)
3443 e1000e_vlan_strip_enable(adapter
);
3445 e1000e_vlan_strip_disable(adapter
);
3448 static void e1000e_setup_rss_hash(struct e1000_adapter
*adapter
)
3450 struct e1000_hw
*hw
= &adapter
->hw
;
3453 static const u32 rsskey
[10] = {
3454 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0,
3455 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe
3458 /* Fill out hash function seed */
3459 for (i
= 0; i
< 10; i
++)
3460 ew32(RSSRK(i
), rsskey
[i
]);
3462 /* Direct all traffic to queue 0 */
3463 for (i
= 0; i
< 32; i
++)
3466 /* Disable raw packet checksumming so that RSS hash is placed in
3467 * descriptor on writeback.
3469 rxcsum
= er32(RXCSUM
);
3470 rxcsum
|= E1000_RXCSUM_PCSD
;
3472 ew32(RXCSUM
, rxcsum
);
3474 mrqc
= (E1000_MRQC_RSS_FIELD_IPV4
|
3475 E1000_MRQC_RSS_FIELD_IPV4_TCP
|
3476 E1000_MRQC_RSS_FIELD_IPV6
|
3477 E1000_MRQC_RSS_FIELD_IPV6_TCP
|
3478 E1000_MRQC_RSS_FIELD_IPV6_TCP_EX
);
3484 * e1000e_get_base_timinca - get default SYSTIM time increment attributes
3485 * @adapter: board private structure
3486 * @timinca: pointer to returned time increment attributes
3488 * Get attributes for incrementing the System Time Register SYSTIML/H at
3489 * the default base frequency, and set the cyclecounter shift value.
3491 s32
e1000e_get_base_timinca(struct e1000_adapter
*adapter
, u32
*timinca
)
3493 struct e1000_hw
*hw
= &adapter
->hw
;
3494 u32 incvalue
, incperiod
, shift
;
3496 /* Make sure clock is enabled on I217 before checking the frequency */
3497 if ((hw
->mac
.type
== e1000_pch_lpt
) &&
3498 !(er32(TSYNCTXCTL
) & E1000_TSYNCTXCTL_ENABLED
) &&
3499 !(er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_ENABLED
)) {
3500 u32 fextnvm7
= er32(FEXTNVM7
);
3502 if (!(fextnvm7
& (1 << 0))) {
3503 ew32(FEXTNVM7
, fextnvm7
| (1 << 0));
3508 switch (hw
->mac
.type
) {
3511 /* On I217, the clock frequency is 25MHz or 96MHz as
3512 * indicated by the System Clock Frequency Indication
3514 if ((hw
->mac
.type
!= e1000_pch_lpt
) ||
3515 (er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_SYSCFI
)) {
3516 /* Stable 96MHz frequency */
3517 incperiod
= INCPERIOD_96MHz
;
3518 incvalue
= INCVALUE_96MHz
;
3519 shift
= INCVALUE_SHIFT_96MHz
;
3520 adapter
->cc
.shift
= shift
+ INCPERIOD_SHIFT_96MHz
;
3526 /* Stable 25MHz frequency */
3527 incperiod
= INCPERIOD_25MHz
;
3528 incvalue
= INCVALUE_25MHz
;
3529 shift
= INCVALUE_SHIFT_25MHz
;
3530 adapter
->cc
.shift
= shift
;
3536 *timinca
= ((incperiod
<< E1000_TIMINCA_INCPERIOD_SHIFT
) |
3537 ((incvalue
<< shift
) & E1000_TIMINCA_INCVALUE_MASK
));
3543 * e1000e_config_hwtstamp - configure the hwtstamp registers and enable/disable
3544 * @adapter: board private structure
3546 * Outgoing time stamping can be enabled and disabled. Play nice and
3547 * disable it when requested, although it shouldn't cause any overhead
3548 * when no packet needs it. At most one packet in the queue may be
3549 * marked for time stamping, otherwise it would be impossible to tell
3550 * for sure to which packet the hardware time stamp belongs.
3552 * Incoming time stamping has to be configured via the hardware filters.
3553 * Not all combinations are supported, in particular event type has to be
3554 * specified. Matching the kind of event packet is not supported, with the
3555 * exception of "all V2 events regardless of level 2 or 4".
3557 static int e1000e_config_hwtstamp(struct e1000_adapter
*adapter
,
3558 struct hwtstamp_config
*config
)
3560 struct e1000_hw
*hw
= &adapter
->hw
;
3561 u32 tsync_tx_ctl
= E1000_TSYNCTXCTL_ENABLED
;
3562 u32 tsync_rx_ctl
= E1000_TSYNCRXCTL_ENABLED
;
3570 if (!(adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
))
3573 /* flags reserved for future extensions - must be zero */
3577 switch (config
->tx_type
) {
3578 case HWTSTAMP_TX_OFF
:
3581 case HWTSTAMP_TX_ON
:
3587 switch (config
->rx_filter
) {
3588 case HWTSTAMP_FILTER_NONE
:
3591 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC
:
3592 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L4_V1
;
3593 rxmtrl
= E1000_RXMTRL_PTP_V1_SYNC_MESSAGE
;
3596 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ
:
3597 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L4_V1
;
3598 rxmtrl
= E1000_RXMTRL_PTP_V1_DELAY_REQ_MESSAGE
;
3601 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC
:
3602 /* Also time stamps V2 L2 Path Delay Request/Response */
3603 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_V2
;
3604 rxmtrl
= E1000_RXMTRL_PTP_V2_SYNC_MESSAGE
;
3607 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ
:
3608 /* Also time stamps V2 L2 Path Delay Request/Response. */
3609 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_V2
;
3610 rxmtrl
= E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE
;
3613 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC
:
3614 /* Hardware cannot filter just V2 L4 Sync messages;
3615 * fall-through to V2 (both L2 and L4) Sync.
3617 case HWTSTAMP_FILTER_PTP_V2_SYNC
:
3618 /* Also time stamps V2 Path Delay Request/Response. */
3619 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_L4_V2
;
3620 rxmtrl
= E1000_RXMTRL_PTP_V2_SYNC_MESSAGE
;
3624 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ
:
3625 /* Hardware cannot filter just V2 L4 Delay Request messages;
3626 * fall-through to V2 (both L2 and L4) Delay Request.
3628 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ
:
3629 /* Also time stamps V2 Path Delay Request/Response. */
3630 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_L2_L4_V2
;
3631 rxmtrl
= E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE
;
3635 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT
:
3636 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT
:
3637 /* Hardware cannot filter just V2 L4 or L2 Event messages;
3638 * fall-through to all V2 (both L2 and L4) Events.
3640 case HWTSTAMP_FILTER_PTP_V2_EVENT
:
3641 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_EVENT_V2
;
3642 config
->rx_filter
= HWTSTAMP_FILTER_PTP_V2_EVENT
;
3646 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT
:
3647 /* For V1, the hardware can only filter Sync messages or
3648 * Delay Request messages but not both so fall-through to
3649 * time stamp all packets.
3651 case HWTSTAMP_FILTER_ALL
:
3654 tsync_rx_ctl
|= E1000_TSYNCRXCTL_TYPE_ALL
;
3655 config
->rx_filter
= HWTSTAMP_FILTER_ALL
;
3661 adapter
->hwtstamp_config
= *config
;
3663 /* enable/disable Tx h/w time stamping */
3664 regval
= er32(TSYNCTXCTL
);
3665 regval
&= ~E1000_TSYNCTXCTL_ENABLED
;
3666 regval
|= tsync_tx_ctl
;
3667 ew32(TSYNCTXCTL
, regval
);
3668 if ((er32(TSYNCTXCTL
) & E1000_TSYNCTXCTL_ENABLED
) !=
3669 (regval
& E1000_TSYNCTXCTL_ENABLED
)) {
3670 e_err("Timesync Tx Control register not set as expected\n");
3674 /* enable/disable Rx h/w time stamping */
3675 regval
= er32(TSYNCRXCTL
);
3676 regval
&= ~(E1000_TSYNCRXCTL_ENABLED
| E1000_TSYNCRXCTL_TYPE_MASK
);
3677 regval
|= tsync_rx_ctl
;
3678 ew32(TSYNCRXCTL
, regval
);
3679 if ((er32(TSYNCRXCTL
) & (E1000_TSYNCRXCTL_ENABLED
|
3680 E1000_TSYNCRXCTL_TYPE_MASK
)) !=
3681 (regval
& (E1000_TSYNCRXCTL_ENABLED
|
3682 E1000_TSYNCRXCTL_TYPE_MASK
))) {
3683 e_err("Timesync Rx Control register not set as expected\n");
3687 /* L2: define ethertype filter for time stamped packets */
3689 rxmtrl
|= ETH_P_1588
;
3691 /* define which PTP packets get time stamped */
3692 ew32(RXMTRL
, rxmtrl
);
3694 /* Filter by destination port */
3696 rxudp
= PTP_EV_PORT
;
3697 cpu_to_be16s(&rxudp
);
3703 /* Clear TSYNCRXCTL_VALID & TSYNCTXCTL_VALID bit */
3707 /* Get and set the System Time Register SYSTIM base frequency */
3708 ret_val
= e1000e_get_base_timinca(adapter
, ®val
);
3711 ew32(TIMINCA
, regval
);
3713 /* reset the ns time counter */
3714 timecounter_init(&adapter
->tc
, &adapter
->cc
,
3715 ktime_to_ns(ktime_get_real()));
3721 * e1000_configure - configure the hardware for Rx and Tx
3722 * @adapter: private board structure
3724 static void e1000_configure(struct e1000_adapter
*adapter
)
3726 struct e1000_ring
*rx_ring
= adapter
->rx_ring
;
3728 e1000e_set_rx_mode(adapter
->netdev
);
3730 e1000_restore_vlan(adapter
);
3731 e1000_init_manageability_pt(adapter
);
3733 e1000_configure_tx(adapter
);
3735 if (adapter
->netdev
->features
& NETIF_F_RXHASH
)
3736 e1000e_setup_rss_hash(adapter
);
3737 e1000_setup_rctl(adapter
);
3738 e1000_configure_rx(adapter
);
3739 adapter
->alloc_rx_buf(rx_ring
, e1000_desc_unused(rx_ring
), GFP_KERNEL
);
3743 * e1000e_power_up_phy - restore link in case the phy was powered down
3744 * @adapter: address of board private structure
3746 * The phy may be powered down to save power and turn off link when the
3747 * driver is unloaded and wake on lan is not enabled (among others)
3748 * *** this routine MUST be followed by a call to e1000e_reset ***
3750 void e1000e_power_up_phy(struct e1000_adapter
*adapter
)
3752 if (adapter
->hw
.phy
.ops
.power_up
)
3753 adapter
->hw
.phy
.ops
.power_up(&adapter
->hw
);
3755 adapter
->hw
.mac
.ops
.setup_link(&adapter
->hw
);
3759 * e1000_power_down_phy - Power down the PHY
3761 * Power down the PHY so no link is implied when interface is down.
3762 * The PHY cannot be powered down if management or WoL is active.
3764 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
3766 if (adapter
->hw
.phy
.ops
.power_down
)
3767 adapter
->hw
.phy
.ops
.power_down(&adapter
->hw
);
3771 * e1000e_reset - bring the hardware into a known good state
3773 * This function boots the hardware and enables some settings that
3774 * require a configuration cycle of the hardware - those cannot be
3775 * set/changed during runtime. After reset the device needs to be
3776 * properly configured for Rx, Tx etc.
3778 void e1000e_reset(struct e1000_adapter
*adapter
)
3780 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
3781 struct e1000_fc_info
*fc
= &adapter
->hw
.fc
;
3782 struct e1000_hw
*hw
= &adapter
->hw
;
3783 u32 tx_space
, min_tx_space
, min_rx_space
;
3784 u32 pba
= adapter
->pba
;
3787 /* reset Packet Buffer Allocation to default */
3790 if (adapter
->max_frame_size
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) {
3791 /* To maintain wire speed transmits, the Tx FIFO should be
3792 * large enough to accommodate two full transmit packets,
3793 * rounded up to the next 1KB and expressed in KB. Likewise,
3794 * the Rx FIFO should be large enough to accommodate at least
3795 * one full receive packet and is similarly rounded up and
3799 /* upper 16 bits has Tx packet buffer allocation size in KB */
3800 tx_space
= pba
>> 16;
3801 /* lower 16 bits has Rx packet buffer allocation size in KB */
3803 /* the Tx fifo also stores 16 bytes of information about the Tx
3804 * but don't include ethernet FCS because hardware appends it
3806 min_tx_space
= (adapter
->max_frame_size
+
3807 sizeof(struct e1000_tx_desc
) - ETH_FCS_LEN
) * 2;
3808 min_tx_space
= ALIGN(min_tx_space
, 1024);
3809 min_tx_space
>>= 10;
3810 /* software strips receive CRC, so leave room for it */
3811 min_rx_space
= adapter
->max_frame_size
;
3812 min_rx_space
= ALIGN(min_rx_space
, 1024);
3813 min_rx_space
>>= 10;
3815 /* If current Tx allocation is less than the min Tx FIFO size,
3816 * and the min Tx FIFO size is less than the current Rx FIFO
3817 * allocation, take space away from current Rx allocation
3819 if ((tx_space
< min_tx_space
) &&
3820 ((min_tx_space
- tx_space
) < pba
)) {
3821 pba
-= min_tx_space
- tx_space
;
3823 /* if short on Rx space, Rx wins and must trump Tx
3826 if (pba
< min_rx_space
)
3833 /* flow control settings
3835 * The high water mark must be low enough to fit one full frame
3836 * (or the size used for early receive) above it in the Rx FIFO.
3837 * Set it to the lower of:
3838 * - 90% of the Rx FIFO size, and
3839 * - the full Rx FIFO size minus one full frame
3841 if (adapter
->flags
& FLAG_DISABLE_FC_PAUSE_TIME
)
3842 fc
->pause_time
= 0xFFFF;
3844 fc
->pause_time
= E1000_FC_PAUSE_TIME
;
3845 fc
->send_xon
= true;
3846 fc
->current_mode
= fc
->requested_mode
;
3848 switch (hw
->mac
.type
) {
3850 case e1000_ich10lan
:
3851 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3854 fc
->high_water
= 0x2800;
3855 fc
->low_water
= fc
->high_water
- 8;
3860 hwm
= min(((pba
<< 10) * 9 / 10),
3861 ((pba
<< 10) - adapter
->max_frame_size
));
3863 fc
->high_water
= hwm
& E1000_FCRTH_RTH
; /* 8-byte granularity */
3864 fc
->low_water
= fc
->high_water
- 8;
3867 /* Workaround PCH LOM adapter hangs with certain network
3868 * loads. If hangs persist, try disabling Tx flow control.
3870 if (adapter
->netdev
->mtu
> ETH_DATA_LEN
) {
3871 fc
->high_water
= 0x3500;
3872 fc
->low_water
= 0x1500;
3874 fc
->high_water
= 0x5000;
3875 fc
->low_water
= 0x3000;
3877 fc
->refresh_time
= 0x1000;
3881 fc
->refresh_time
= 0x0400;
3883 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
) {
3884 fc
->high_water
= 0x05C20;
3885 fc
->low_water
= 0x05048;
3886 fc
->pause_time
= 0x0650;
3892 fc
->high_water
= ((pba
<< 10) * 9 / 10) & E1000_FCRTH_RTH
;
3893 fc
->low_water
= ((pba
<< 10) * 8 / 10) & E1000_FCRTL_RTL
;
3897 /* Alignment of Tx data is on an arbitrary byte boundary with the
3898 * maximum size per Tx descriptor limited only to the transmit
3899 * allocation of the packet buffer minus 96 bytes with an upper
3900 * limit of 24KB due to receive synchronization limitations.
3902 adapter
->tx_fifo_limit
= min_t(u32
, ((er32(PBA
) >> 16) << 10) - 96,
3905 /* Disable Adaptive Interrupt Moderation if 2 full packets cannot
3906 * fit in receive buffer.
3908 if (adapter
->itr_setting
& 0x3) {
3909 if ((adapter
->max_frame_size
* 2) > (pba
<< 10)) {
3910 if (!(adapter
->flags2
& FLAG2_DISABLE_AIM
)) {
3911 dev_info(&adapter
->pdev
->dev
,
3912 "Interrupt Throttle Rate off\n");
3913 adapter
->flags2
|= FLAG2_DISABLE_AIM
;
3914 e1000e_write_itr(adapter
, 0);
3916 } else if (adapter
->flags2
& FLAG2_DISABLE_AIM
) {
3917 dev_info(&adapter
->pdev
->dev
,
3918 "Interrupt Throttle Rate on\n");
3919 adapter
->flags2
&= ~FLAG2_DISABLE_AIM
;
3920 adapter
->itr
= 20000;
3921 e1000e_write_itr(adapter
, adapter
->itr
);
3925 /* Allow time for pending master requests to run */
3926 mac
->ops
.reset_hw(hw
);
3928 /* For parts with AMT enabled, let the firmware know
3929 * that the network interface is in control
3931 if (adapter
->flags
& FLAG_HAS_AMT
)
3932 e1000e_get_hw_control(adapter
);
3936 if (mac
->ops
.init_hw(hw
))
3937 e_err("Hardware Error\n");
3939 e1000_update_mng_vlan(adapter
);
3941 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
3942 ew32(VET
, ETH_P_8021Q
);
3944 e1000e_reset_adaptive(hw
);
3946 /* initialize systim and reset the ns time counter */
3947 e1000e_config_hwtstamp(adapter
, &adapter
->hwtstamp_config
);
3949 /* Set EEE advertisement as appropriate */
3950 if (adapter
->flags2
& FLAG2_HAS_EEE
) {
3954 switch (hw
->phy
.type
) {
3955 case e1000_phy_82579
:
3956 adv_addr
= I82579_EEE_ADVERTISEMENT
;
3958 case e1000_phy_i217
:
3959 adv_addr
= I217_EEE_ADVERTISEMENT
;
3962 dev_err(&adapter
->pdev
->dev
,
3963 "Invalid PHY type setting EEE advertisement\n");
3967 ret_val
= hw
->phy
.ops
.acquire(hw
);
3969 dev_err(&adapter
->pdev
->dev
,
3970 "EEE advertisement - unable to acquire PHY\n");
3974 e1000_write_emi_reg_locked(hw
, adv_addr
,
3975 hw
->dev_spec
.ich8lan
.eee_disable
?
3976 0 : adapter
->eee_advert
);
3978 hw
->phy
.ops
.release(hw
);
3981 if (!netif_running(adapter
->netdev
) &&
3982 !test_bit(__E1000_TESTING
, &adapter
->state
))
3983 e1000_power_down_phy(adapter
);
3985 e1000_get_phy_info(hw
);
3987 if ((adapter
->flags
& FLAG_HAS_SMART_POWER_DOWN
) &&
3988 !(adapter
->flags
& FLAG_SMART_POWER_DOWN
)) {
3990 /* speed up time to link by disabling smart power down, ignore
3991 * the return value of this function because there is nothing
3992 * different we would do if it failed
3994 e1e_rphy(hw
, IGP02E1000_PHY_POWER_MGMT
, &phy_data
);
3995 phy_data
&= ~IGP02E1000_PM_SPD
;
3996 e1e_wphy(hw
, IGP02E1000_PHY_POWER_MGMT
, phy_data
);
4000 int e1000e_up(struct e1000_adapter
*adapter
)
4002 struct e1000_hw
*hw
= &adapter
->hw
;
4004 /* hardware has been reset, we need to reload some things */
4005 e1000_configure(adapter
);
4007 clear_bit(__E1000_DOWN
, &adapter
->state
);
4009 if (adapter
->msix_entries
)
4010 e1000_configure_msix(adapter
);
4011 e1000_irq_enable(adapter
);
4013 netif_start_queue(adapter
->netdev
);
4015 /* fire a link change interrupt to start the watchdog */
4016 if (adapter
->msix_entries
)
4017 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
4019 ew32(ICS
, E1000_ICS_LSC
);
4024 static void e1000e_flush_descriptors(struct e1000_adapter
*adapter
)
4026 struct e1000_hw
*hw
= &adapter
->hw
;
4028 if (!(adapter
->flags2
& FLAG2_DMA_BURST
))
4031 /* flush pending descriptor writebacks to memory */
4032 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
4033 ew32(RDTR
, adapter
->rx_int_delay
| E1000_RDTR_FPD
);
4035 /* execute the writes immediately */
4038 /* due to rare timing issues, write to TIDV/RDTR again to ensure the
4039 * write is successful
4041 ew32(TIDV
, adapter
->tx_int_delay
| E1000_TIDV_FPD
);
4042 ew32(RDTR
, adapter
->rx_int_delay
| E1000_RDTR_FPD
);
4044 /* execute the writes immediately */
4048 static void e1000e_update_stats(struct e1000_adapter
*adapter
);
4051 * e1000e_down - quiesce the device and optionally reset the hardware
4052 * @adapter: board private structure
4053 * @reset: boolean flag to reset the hardware or not
4055 void e1000e_down(struct e1000_adapter
*adapter
, bool reset
)
4057 struct net_device
*netdev
= adapter
->netdev
;
4058 struct e1000_hw
*hw
= &adapter
->hw
;
4061 /* signal that we're down so the interrupt handler does not
4062 * reschedule our watchdog timer
4064 set_bit(__E1000_DOWN
, &adapter
->state
);
4066 /* disable receives in the hardware */
4068 if (!(adapter
->flags2
& FLAG2_NO_DISABLE_RX
))
4069 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
4070 /* flush and sleep below */
4072 netif_stop_queue(netdev
);
4074 /* disable transmits in the hardware */
4076 tctl
&= ~E1000_TCTL_EN
;
4079 /* flush both disables and wait for them to finish */
4081 usleep_range(10000, 20000);
4083 e1000_irq_disable(adapter
);
4085 napi_synchronize(&adapter
->napi
);
4087 del_timer_sync(&adapter
->watchdog_timer
);
4088 del_timer_sync(&adapter
->phy_info_timer
);
4090 netif_carrier_off(netdev
);
4092 spin_lock(&adapter
->stats64_lock
);
4093 e1000e_update_stats(adapter
);
4094 spin_unlock(&adapter
->stats64_lock
);
4096 e1000e_flush_descriptors(adapter
);
4097 e1000_clean_tx_ring(adapter
->tx_ring
);
4098 e1000_clean_rx_ring(adapter
->rx_ring
);
4100 adapter
->link_speed
= 0;
4101 adapter
->link_duplex
= 0;
4103 /* Disable Si errata workaround on PCHx for jumbo frame flow */
4104 if ((hw
->mac
.type
>= e1000_pch2lan
) &&
4105 (adapter
->netdev
->mtu
> ETH_DATA_LEN
) &&
4106 e1000_lv_jumbo_workaround_ich8lan(hw
, false))
4107 e_dbg("failed to disable jumbo frame workaround mode\n");
4109 if (reset
&& !pci_channel_offline(adapter
->pdev
))
4110 e1000e_reset(adapter
);
4113 void e1000e_reinit_locked(struct e1000_adapter
*adapter
)
4116 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
4117 usleep_range(1000, 2000);
4118 e1000e_down(adapter
, true);
4120 clear_bit(__E1000_RESETTING
, &adapter
->state
);
4124 * e1000e_cyclecounter_read - read raw cycle counter (used by time counter)
4125 * @cc: cyclecounter structure
4127 static cycle_t
e1000e_cyclecounter_read(const struct cyclecounter
*cc
)
4129 struct e1000_adapter
*adapter
= container_of(cc
, struct e1000_adapter
,
4131 struct e1000_hw
*hw
= &adapter
->hw
;
4132 cycle_t systim
, systim_next
;
4134 /* latch SYSTIMH on read of SYSTIML */
4135 systim
= (cycle_t
)er32(SYSTIML
);
4136 systim
|= (cycle_t
)er32(SYSTIMH
) << 32;
4138 if ((hw
->mac
.type
== e1000_82574
) || (hw
->mac
.type
== e1000_82583
)) {
4139 u64 incvalue
, time_delta
, rem
, temp
;
4142 /* errata for 82574/82583 possible bad bits read from SYSTIMH/L
4143 * check to see that the time is incrementing at a reasonable
4144 * rate and is a multiple of incvalue
4146 incvalue
= er32(TIMINCA
) & E1000_TIMINCA_INCVALUE_MASK
;
4147 for (i
= 0; i
< E1000_MAX_82574_SYSTIM_REREADS
; i
++) {
4148 /* latch SYSTIMH on read of SYSTIML */
4149 systim_next
= (cycle_t
)er32(SYSTIML
);
4150 systim_next
|= (cycle_t
)er32(SYSTIMH
) << 32;
4152 time_delta
= systim_next
- systim
;
4154 rem
= do_div(temp
, incvalue
);
4156 systim
= systim_next
;
4158 if ((time_delta
< E1000_82574_SYSTIM_EPSILON
) &&
4167 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
4168 * @adapter: board private structure to initialize
4170 * e1000_sw_init initializes the Adapter private data structure.
4171 * Fields are initialized based on PCI device information and
4172 * OS network device settings (MTU size).
4174 static int e1000_sw_init(struct e1000_adapter
*adapter
)
4176 struct net_device
*netdev
= adapter
->netdev
;
4178 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
;
4179 adapter
->rx_ps_bsize0
= 128;
4180 adapter
->max_frame_size
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4181 adapter
->min_frame_size
= ETH_ZLEN
+ ETH_FCS_LEN
;
4182 adapter
->tx_ring_count
= E1000_DEFAULT_TXD
;
4183 adapter
->rx_ring_count
= E1000_DEFAULT_RXD
;
4185 spin_lock_init(&adapter
->stats64_lock
);
4187 e1000e_set_interrupt_capability(adapter
);
4189 if (e1000_alloc_queues(adapter
))
4192 /* Setup hardware time stamping cyclecounter */
4193 if (adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
) {
4194 adapter
->cc
.read
= e1000e_cyclecounter_read
;
4195 adapter
->cc
.mask
= CLOCKSOURCE_MASK(64);
4196 adapter
->cc
.mult
= 1;
4197 /* cc.shift set in e1000e_get_base_tininca() */
4199 spin_lock_init(&adapter
->systim_lock
);
4200 INIT_WORK(&adapter
->tx_hwtstamp_work
, e1000e_tx_hwtstamp_work
);
4203 /* Explicitly disable IRQ since the NIC can be in any state. */
4204 e1000_irq_disable(adapter
);
4206 set_bit(__E1000_DOWN
, &adapter
->state
);
4211 * e1000_intr_msi_test - Interrupt Handler
4212 * @irq: interrupt number
4213 * @data: pointer to a network interface device structure
4215 static irqreturn_t
e1000_intr_msi_test(int __always_unused irq
, void *data
)
4217 struct net_device
*netdev
= data
;
4218 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4219 struct e1000_hw
*hw
= &adapter
->hw
;
4220 u32 icr
= er32(ICR
);
4222 e_dbg("icr is %08X\n", icr
);
4223 if (icr
& E1000_ICR_RXSEQ
) {
4224 adapter
->flags
&= ~FLAG_MSI_TEST_FAILED
;
4225 /* Force memory writes to complete before acknowledging the
4226 * interrupt is handled.
4235 * e1000_test_msi_interrupt - Returns 0 for successful test
4236 * @adapter: board private struct
4238 * code flow taken from tg3.c
4240 static int e1000_test_msi_interrupt(struct e1000_adapter
*adapter
)
4242 struct net_device
*netdev
= adapter
->netdev
;
4243 struct e1000_hw
*hw
= &adapter
->hw
;
4246 /* poll_enable hasn't been called yet, so don't need disable */
4247 /* clear any pending events */
4250 /* free the real vector and request a test handler */
4251 e1000_free_irq(adapter
);
4252 e1000e_reset_interrupt_capability(adapter
);
4254 /* Assume that the test fails, if it succeeds then the test
4255 * MSI irq handler will unset this flag
4257 adapter
->flags
|= FLAG_MSI_TEST_FAILED
;
4259 err
= pci_enable_msi(adapter
->pdev
);
4261 goto msi_test_failed
;
4263 err
= request_irq(adapter
->pdev
->irq
, e1000_intr_msi_test
, 0,
4264 netdev
->name
, netdev
);
4266 pci_disable_msi(adapter
->pdev
);
4267 goto msi_test_failed
;
4270 /* Force memory writes to complete before enabling and firing an
4275 e1000_irq_enable(adapter
);
4277 /* fire an unusual interrupt on the test handler */
4278 ew32(ICS
, E1000_ICS_RXSEQ
);
4282 e1000_irq_disable(adapter
);
4284 rmb(); /* read flags after interrupt has been fired */
4286 if (adapter
->flags
& FLAG_MSI_TEST_FAILED
) {
4287 adapter
->int_mode
= E1000E_INT_MODE_LEGACY
;
4288 e_info("MSI interrupt test failed, using legacy interrupt.\n");
4290 e_dbg("MSI interrupt test succeeded!\n");
4293 free_irq(adapter
->pdev
->irq
, netdev
);
4294 pci_disable_msi(adapter
->pdev
);
4297 e1000e_set_interrupt_capability(adapter
);
4298 return e1000_request_irq(adapter
);
4302 * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
4303 * @adapter: board private struct
4305 * code flow taken from tg3.c, called with e1000 interrupts disabled.
4307 static int e1000_test_msi(struct e1000_adapter
*adapter
)
4312 if (!(adapter
->flags
& FLAG_MSI_ENABLED
))
4315 /* disable SERR in case the MSI write causes a master abort */
4316 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
4317 if (pci_cmd
& PCI_COMMAND_SERR
)
4318 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
,
4319 pci_cmd
& ~PCI_COMMAND_SERR
);
4321 err
= e1000_test_msi_interrupt(adapter
);
4323 /* re-enable SERR */
4324 if (pci_cmd
& PCI_COMMAND_SERR
) {
4325 pci_read_config_word(adapter
->pdev
, PCI_COMMAND
, &pci_cmd
);
4326 pci_cmd
|= PCI_COMMAND_SERR
;
4327 pci_write_config_word(adapter
->pdev
, PCI_COMMAND
, pci_cmd
);
4334 * e1000_open - Called when a network interface is made active
4335 * @netdev: network interface device structure
4337 * Returns 0 on success, negative value on failure
4339 * The open entry point is called when a network interface is made
4340 * active by the system (IFF_UP). At this point all resources needed
4341 * for transmit and receive operations are allocated, the interrupt
4342 * handler is registered with the OS, the watchdog timer is started,
4343 * and the stack is notified that the interface is ready.
4345 static int e1000_open(struct net_device
*netdev
)
4347 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4348 struct e1000_hw
*hw
= &adapter
->hw
;
4349 struct pci_dev
*pdev
= adapter
->pdev
;
4352 /* disallow open during test */
4353 if (test_bit(__E1000_TESTING
, &adapter
->state
))
4356 pm_runtime_get_sync(&pdev
->dev
);
4358 netif_carrier_off(netdev
);
4360 /* allocate transmit descriptors */
4361 err
= e1000e_setup_tx_resources(adapter
->tx_ring
);
4365 /* allocate receive descriptors */
4366 err
= e1000e_setup_rx_resources(adapter
->rx_ring
);
4370 /* If AMT is enabled, let the firmware know that the network
4371 * interface is now open and reset the part to a known state.
4373 if (adapter
->flags
& FLAG_HAS_AMT
) {
4374 e1000e_get_hw_control(adapter
);
4375 e1000e_reset(adapter
);
4378 e1000e_power_up_phy(adapter
);
4380 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4381 if ((adapter
->hw
.mng_cookie
.status
& E1000_MNG_DHCP_COOKIE_STATUS_VLAN
))
4382 e1000_update_mng_vlan(adapter
);
4384 /* DMA latency requirement to workaround jumbo issue */
4385 pm_qos_add_request(&adapter
->netdev
->pm_qos_req
, PM_QOS_CPU_DMA_LATENCY
,
4386 PM_QOS_DEFAULT_VALUE
);
4388 /* before we allocate an interrupt, we must be ready to handle it.
4389 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
4390 * as soon as we call pci_request_irq, so we have to setup our
4391 * clean_rx handler before we do so.
4393 e1000_configure(adapter
);
4395 err
= e1000_request_irq(adapter
);
4399 /* Work around PCIe errata with MSI interrupts causing some chipsets to
4400 * ignore e1000e MSI messages, which means we need to test our MSI
4403 if (adapter
->int_mode
!= E1000E_INT_MODE_LEGACY
) {
4404 err
= e1000_test_msi(adapter
);
4406 e_err("Interrupt allocation failed\n");
4411 /* From here on the code is the same as e1000e_up() */
4412 clear_bit(__E1000_DOWN
, &adapter
->state
);
4414 napi_enable(&adapter
->napi
);
4416 e1000_irq_enable(adapter
);
4418 adapter
->tx_hang_recheck
= false;
4419 netif_start_queue(netdev
);
4421 hw
->mac
.get_link_status
= true;
4422 pm_runtime_put(&pdev
->dev
);
4424 /* fire a link status change interrupt to start the watchdog */
4425 if (adapter
->msix_entries
)
4426 ew32(ICS
, E1000_ICS_LSC
| E1000_ICR_OTHER
);
4428 ew32(ICS
, E1000_ICS_LSC
);
4433 e1000e_release_hw_control(adapter
);
4434 e1000_power_down_phy(adapter
);
4435 e1000e_free_rx_resources(adapter
->rx_ring
);
4437 e1000e_free_tx_resources(adapter
->tx_ring
);
4439 e1000e_reset(adapter
);
4440 pm_runtime_put_sync(&pdev
->dev
);
4446 * e1000_close - Disables a network interface
4447 * @netdev: network interface device structure
4449 * Returns 0, this is not allowed to fail
4451 * The close entry point is called when an interface is de-activated
4452 * by the OS. The hardware is still under the drivers control, but
4453 * needs to be disabled. A global MAC reset is issued to stop the
4454 * hardware, and all transmit and receive resources are freed.
4456 static int e1000_close(struct net_device
*netdev
)
4458 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4459 struct pci_dev
*pdev
= adapter
->pdev
;
4460 int count
= E1000_CHECK_RESET_COUNT
;
4462 while (test_bit(__E1000_RESETTING
, &adapter
->state
) && count
--)
4463 usleep_range(10000, 20000);
4465 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
4467 pm_runtime_get_sync(&pdev
->dev
);
4469 if (!test_bit(__E1000_DOWN
, &adapter
->state
)) {
4470 e1000e_down(adapter
, true);
4471 e1000_free_irq(adapter
);
4473 /* Link status message must follow this format */
4474 pr_info("%s NIC Link is Down\n", adapter
->netdev
->name
);
4477 napi_disable(&adapter
->napi
);
4479 e1000e_free_tx_resources(adapter
->tx_ring
);
4480 e1000e_free_rx_resources(adapter
->rx_ring
);
4482 /* kill manageability vlan ID if supported, but not if a vlan with
4483 * the same ID is registered on the host OS (let 8021q kill it)
4485 if (adapter
->hw
.mng_cookie
.status
& E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)
4486 e1000_vlan_rx_kill_vid(netdev
, htons(ETH_P_8021Q
),
4487 adapter
->mng_vlan_id
);
4489 /* If AMT is enabled, let the firmware know that the network
4490 * interface is now closed
4492 if ((adapter
->flags
& FLAG_HAS_AMT
) &&
4493 !test_bit(__E1000_TESTING
, &adapter
->state
))
4494 e1000e_release_hw_control(adapter
);
4496 pm_qos_remove_request(&adapter
->netdev
->pm_qos_req
);
4498 pm_runtime_put_sync(&pdev
->dev
);
4504 * e1000_set_mac - Change the Ethernet Address of the NIC
4505 * @netdev: network interface device structure
4506 * @p: pointer to an address structure
4508 * Returns 0 on success, negative on failure
4510 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
4512 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4513 struct e1000_hw
*hw
= &adapter
->hw
;
4514 struct sockaddr
*addr
= p
;
4516 if (!is_valid_ether_addr(addr
->sa_data
))
4517 return -EADDRNOTAVAIL
;
4519 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
4520 memcpy(adapter
->hw
.mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
4522 hw
->mac
.ops
.rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
, 0);
4524 if (adapter
->flags
& FLAG_RESET_OVERWRITES_LAA
) {
4525 /* activate the work around */
4526 e1000e_set_laa_state_82571(&adapter
->hw
, 1);
4528 /* Hold a copy of the LAA in RAR[14] This is done so that
4529 * between the time RAR[0] gets clobbered and the time it
4530 * gets fixed (in e1000_watchdog), the actual LAA is in one
4531 * of the RARs and no incoming packets directed to this port
4532 * are dropped. Eventually the LAA will be in RAR[0] and
4535 hw
->mac
.ops
.rar_set(&adapter
->hw
, adapter
->hw
.mac
.addr
,
4536 adapter
->hw
.mac
.rar_entry_count
- 1);
4543 * e1000e_update_phy_task - work thread to update phy
4544 * @work: pointer to our work struct
4546 * this worker thread exists because we must acquire a
4547 * semaphore to read the phy, which we could msleep while
4548 * waiting for it, and we can't msleep in a timer.
4550 static void e1000e_update_phy_task(struct work_struct
*work
)
4552 struct e1000_adapter
*adapter
= container_of(work
,
4553 struct e1000_adapter
,
4555 struct e1000_hw
*hw
= &adapter
->hw
;
4557 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4560 e1000_get_phy_info(hw
);
4562 /* Enable EEE on 82579 after link up */
4563 if (hw
->phy
.type
>= e1000_phy_82579
)
4564 e1000_set_eee_pchlan(hw
);
4568 * e1000_update_phy_info - timre call-back to update PHY info
4569 * @data: pointer to adapter cast into an unsigned long
4571 * Need to wait a few seconds after link up to get diagnostic information from
4574 static void e1000_update_phy_info(unsigned long data
)
4576 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
4578 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4581 schedule_work(&adapter
->update_phy_task
);
4585 * e1000e_update_phy_stats - Update the PHY statistics counters
4586 * @adapter: board private structure
4588 * Read/clear the upper 16-bit PHY registers and read/accumulate lower
4590 static void e1000e_update_phy_stats(struct e1000_adapter
*adapter
)
4592 struct e1000_hw
*hw
= &adapter
->hw
;
4596 ret_val
= hw
->phy
.ops
.acquire(hw
);
4600 /* A page set is expensive so check if already on desired page.
4601 * If not, set to the page with the PHY status registers.
4604 ret_val
= e1000e_read_phy_reg_mdic(hw
, IGP01E1000_PHY_PAGE_SELECT
,
4608 if (phy_data
!= (HV_STATS_PAGE
<< IGP_PAGE_SHIFT
)) {
4609 ret_val
= hw
->phy
.ops
.set_page(hw
,
4610 HV_STATS_PAGE
<< IGP_PAGE_SHIFT
);
4615 /* Single Collision Count */
4616 hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_UPPER
, &phy_data
);
4617 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_SCC_LOWER
, &phy_data
);
4619 adapter
->stats
.scc
+= phy_data
;
4621 /* Excessive Collision Count */
4622 hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_UPPER
, &phy_data
);
4623 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_ECOL_LOWER
, &phy_data
);
4625 adapter
->stats
.ecol
+= phy_data
;
4627 /* Multiple Collision Count */
4628 hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_UPPER
, &phy_data
);
4629 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_MCC_LOWER
, &phy_data
);
4631 adapter
->stats
.mcc
+= phy_data
;
4633 /* Late Collision Count */
4634 hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_UPPER
, &phy_data
);
4635 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_LATECOL_LOWER
, &phy_data
);
4637 adapter
->stats
.latecol
+= phy_data
;
4639 /* Collision Count - also used for adaptive IFS */
4640 hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_UPPER
, &phy_data
);
4641 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_COLC_LOWER
, &phy_data
);
4643 hw
->mac
.collision_delta
= phy_data
;
4646 hw
->phy
.ops
.read_reg_page(hw
, HV_DC_UPPER
, &phy_data
);
4647 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_DC_LOWER
, &phy_data
);
4649 adapter
->stats
.dc
+= phy_data
;
4651 /* Transmit with no CRS */
4652 hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_UPPER
, &phy_data
);
4653 ret_val
= hw
->phy
.ops
.read_reg_page(hw
, HV_TNCRS_LOWER
, &phy_data
);
4655 adapter
->stats
.tncrs
+= phy_data
;
4658 hw
->phy
.ops
.release(hw
);
4662 * e1000e_update_stats - Update the board statistics counters
4663 * @adapter: board private structure
4665 static void e1000e_update_stats(struct e1000_adapter
*adapter
)
4667 struct net_device
*netdev
= adapter
->netdev
;
4668 struct e1000_hw
*hw
= &adapter
->hw
;
4669 struct pci_dev
*pdev
= adapter
->pdev
;
4671 /* Prevent stats update while adapter is being reset, or if the pci
4672 * connection is down.
4674 if (adapter
->link_speed
== 0)
4676 if (pci_channel_offline(pdev
))
4679 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
4680 adapter
->stats
.gprc
+= er32(GPRC
);
4681 adapter
->stats
.gorc
+= er32(GORCL
);
4682 er32(GORCH
); /* Clear gorc */
4683 adapter
->stats
.bprc
+= er32(BPRC
);
4684 adapter
->stats
.mprc
+= er32(MPRC
);
4685 adapter
->stats
.roc
+= er32(ROC
);
4687 adapter
->stats
.mpc
+= er32(MPC
);
4689 /* Half-duplex statistics */
4690 if (adapter
->link_duplex
== HALF_DUPLEX
) {
4691 if (adapter
->flags2
& FLAG2_HAS_PHY_STATS
) {
4692 e1000e_update_phy_stats(adapter
);
4694 adapter
->stats
.scc
+= er32(SCC
);
4695 adapter
->stats
.ecol
+= er32(ECOL
);
4696 adapter
->stats
.mcc
+= er32(MCC
);
4697 adapter
->stats
.latecol
+= er32(LATECOL
);
4698 adapter
->stats
.dc
+= er32(DC
);
4700 hw
->mac
.collision_delta
= er32(COLC
);
4702 if ((hw
->mac
.type
!= e1000_82574
) &&
4703 (hw
->mac
.type
!= e1000_82583
))
4704 adapter
->stats
.tncrs
+= er32(TNCRS
);
4706 adapter
->stats
.colc
+= hw
->mac
.collision_delta
;
4709 adapter
->stats
.xonrxc
+= er32(XONRXC
);
4710 adapter
->stats
.xontxc
+= er32(XONTXC
);
4711 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
4712 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
4713 adapter
->stats
.gptc
+= er32(GPTC
);
4714 adapter
->stats
.gotc
+= er32(GOTCL
);
4715 er32(GOTCH
); /* Clear gotc */
4716 adapter
->stats
.rnbc
+= er32(RNBC
);
4717 adapter
->stats
.ruc
+= er32(RUC
);
4719 adapter
->stats
.mptc
+= er32(MPTC
);
4720 adapter
->stats
.bptc
+= er32(BPTC
);
4722 /* used for adaptive IFS */
4724 hw
->mac
.tx_packet_delta
= er32(TPT
);
4725 adapter
->stats
.tpt
+= hw
->mac
.tx_packet_delta
;
4727 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
4728 adapter
->stats
.rxerrc
+= er32(RXERRC
);
4729 adapter
->stats
.cexterr
+= er32(CEXTERR
);
4730 adapter
->stats
.tsctc
+= er32(TSCTC
);
4731 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
4733 /* Fill out the OS statistics structure */
4734 netdev
->stats
.multicast
= adapter
->stats
.mprc
;
4735 netdev
->stats
.collisions
= adapter
->stats
.colc
;
4739 /* RLEC on some newer hardware can be incorrect so build
4740 * our own version based on RUC and ROC
4742 netdev
->stats
.rx_errors
= adapter
->stats
.rxerrc
+
4743 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
4744 adapter
->stats
.ruc
+ adapter
->stats
.roc
+ adapter
->stats
.cexterr
;
4745 netdev
->stats
.rx_length_errors
= adapter
->stats
.ruc
+
4747 netdev
->stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
4748 netdev
->stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
4749 netdev
->stats
.rx_missed_errors
= adapter
->stats
.mpc
;
4752 netdev
->stats
.tx_errors
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
4753 netdev
->stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
4754 netdev
->stats
.tx_window_errors
= adapter
->stats
.latecol
;
4755 netdev
->stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
4757 /* Tx Dropped needs to be maintained elsewhere */
4759 /* Management Stats */
4760 adapter
->stats
.mgptc
+= er32(MGTPTC
);
4761 adapter
->stats
.mgprc
+= er32(MGTPRC
);
4762 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
4764 /* Correctable ECC Errors */
4765 if (hw
->mac
.type
== e1000_pch_lpt
) {
4766 u32 pbeccsts
= er32(PBECCSTS
);
4768 adapter
->corr_errors
+=
4769 pbeccsts
& E1000_PBECCSTS_CORR_ERR_CNT_MASK
;
4770 adapter
->uncorr_errors
+=
4771 (pbeccsts
& E1000_PBECCSTS_UNCORR_ERR_CNT_MASK
) >>
4772 E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT
;
4777 * e1000_phy_read_status - Update the PHY register status snapshot
4778 * @adapter: board private structure
4780 static void e1000_phy_read_status(struct e1000_adapter
*adapter
)
4782 struct e1000_hw
*hw
= &adapter
->hw
;
4783 struct e1000_phy_regs
*phy
= &adapter
->phy_regs
;
4785 if (!pm_runtime_suspended((&adapter
->pdev
->dev
)->parent
) &&
4786 (er32(STATUS
) & E1000_STATUS_LU
) &&
4787 (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
)) {
4790 ret_val
= e1e_rphy(hw
, MII_BMCR
, &phy
->bmcr
);
4791 ret_val
|= e1e_rphy(hw
, MII_BMSR
, &phy
->bmsr
);
4792 ret_val
|= e1e_rphy(hw
, MII_ADVERTISE
, &phy
->advertise
);
4793 ret_val
|= e1e_rphy(hw
, MII_LPA
, &phy
->lpa
);
4794 ret_val
|= e1e_rphy(hw
, MII_EXPANSION
, &phy
->expansion
);
4795 ret_val
|= e1e_rphy(hw
, MII_CTRL1000
, &phy
->ctrl1000
);
4796 ret_val
|= e1e_rphy(hw
, MII_STAT1000
, &phy
->stat1000
);
4797 ret_val
|= e1e_rphy(hw
, MII_ESTATUS
, &phy
->estatus
);
4799 e_warn("Error reading PHY register\n");
4801 /* Do not read PHY registers if link is not up
4802 * Set values to typical power-on defaults
4804 phy
->bmcr
= (BMCR_SPEED1000
| BMCR_ANENABLE
| BMCR_FULLDPLX
);
4805 phy
->bmsr
= (BMSR_100FULL
| BMSR_100HALF
| BMSR_10FULL
|
4806 BMSR_10HALF
| BMSR_ESTATEN
| BMSR_ANEGCAPABLE
|
4808 phy
->advertise
= (ADVERTISE_PAUSE_ASYM
| ADVERTISE_PAUSE_CAP
|
4809 ADVERTISE_ALL
| ADVERTISE_CSMA
);
4811 phy
->expansion
= EXPANSION_ENABLENPAGE
;
4812 phy
->ctrl1000
= ADVERTISE_1000FULL
;
4814 phy
->estatus
= (ESTATUS_1000_TFULL
| ESTATUS_1000_THALF
);
4818 static void e1000_print_link_info(struct e1000_adapter
*adapter
)
4820 struct e1000_hw
*hw
= &adapter
->hw
;
4821 u32 ctrl
= er32(CTRL
);
4823 /* Link status message must follow this format for user tools */
4824 pr_info("%s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n",
4825 adapter
->netdev
->name
, adapter
->link_speed
,
4826 adapter
->link_duplex
== FULL_DUPLEX
? "Full" : "Half",
4827 (ctrl
& E1000_CTRL_TFCE
) && (ctrl
& E1000_CTRL_RFCE
) ? "Rx/Tx" :
4828 (ctrl
& E1000_CTRL_RFCE
) ? "Rx" :
4829 (ctrl
& E1000_CTRL_TFCE
) ? "Tx" : "None");
4832 static bool e1000e_has_link(struct e1000_adapter
*adapter
)
4834 struct e1000_hw
*hw
= &adapter
->hw
;
4835 bool link_active
= false;
4838 /* get_link_status is set on LSC (link status) interrupt or
4839 * Rx sequence error interrupt. get_link_status will stay
4840 * false until the check_for_link establishes link
4841 * for copper adapters ONLY
4843 switch (hw
->phy
.media_type
) {
4844 case e1000_media_type_copper
:
4845 if (hw
->mac
.get_link_status
) {
4846 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4847 link_active
= !hw
->mac
.get_link_status
;
4852 case e1000_media_type_fiber
:
4853 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4854 link_active
= !!(er32(STATUS
) & E1000_STATUS_LU
);
4856 case e1000_media_type_internal_serdes
:
4857 ret_val
= hw
->mac
.ops
.check_for_link(hw
);
4858 link_active
= adapter
->hw
.mac
.serdes_has_link
;
4861 case e1000_media_type_unknown
:
4865 if ((ret_val
== E1000_ERR_PHY
) && (hw
->phy
.type
== e1000_phy_igp_3
) &&
4866 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
4867 /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
4868 e_info("Gigabit has been disabled, downgrading speed\n");
4874 static void e1000e_enable_receives(struct e1000_adapter
*adapter
)
4876 /* make sure the receive unit is started */
4877 if ((adapter
->flags
& FLAG_RX_NEEDS_RESTART
) &&
4878 (adapter
->flags
& FLAG_RESTART_NOW
)) {
4879 struct e1000_hw
*hw
= &adapter
->hw
;
4880 u32 rctl
= er32(RCTL
);
4882 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
4883 adapter
->flags
&= ~FLAG_RESTART_NOW
;
4887 static void e1000e_check_82574_phy_workaround(struct e1000_adapter
*adapter
)
4889 struct e1000_hw
*hw
= &adapter
->hw
;
4891 /* With 82574 controllers, PHY needs to be checked periodically
4892 * for hung state and reset, if two calls return true
4894 if (e1000_check_phy_82574(hw
))
4895 adapter
->phy_hang_count
++;
4897 adapter
->phy_hang_count
= 0;
4899 if (adapter
->phy_hang_count
> 1) {
4900 adapter
->phy_hang_count
= 0;
4901 e_dbg("PHY appears hung - resetting\n");
4902 schedule_work(&adapter
->reset_task
);
4907 * e1000_watchdog - Timer Call-back
4908 * @data: pointer to adapter cast into an unsigned long
4910 static void e1000_watchdog(unsigned long data
)
4912 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
4914 /* Do the rest outside of interrupt context */
4915 schedule_work(&adapter
->watchdog_task
);
4917 /* TODO: make this use queue_delayed_work() */
4920 static void e1000_watchdog_task(struct work_struct
*work
)
4922 struct e1000_adapter
*adapter
= container_of(work
,
4923 struct e1000_adapter
,
4925 struct net_device
*netdev
= adapter
->netdev
;
4926 struct e1000_mac_info
*mac
= &adapter
->hw
.mac
;
4927 struct e1000_phy_info
*phy
= &adapter
->hw
.phy
;
4928 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
4929 struct e1000_hw
*hw
= &adapter
->hw
;
4932 if (test_bit(__E1000_DOWN
, &adapter
->state
))
4935 link
= e1000e_has_link(adapter
);
4936 if ((netif_carrier_ok(netdev
)) && link
) {
4937 /* Cancel scheduled suspend requests. */
4938 pm_runtime_resume(netdev
->dev
.parent
);
4940 e1000e_enable_receives(adapter
);
4944 if ((e1000e_enable_tx_pkt_filtering(hw
)) &&
4945 (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
))
4946 e1000_update_mng_vlan(adapter
);
4949 if (!netif_carrier_ok(netdev
)) {
4952 /* Cancel scheduled suspend requests. */
4953 pm_runtime_resume(netdev
->dev
.parent
);
4955 /* update snapshot of PHY registers on LSC */
4956 e1000_phy_read_status(adapter
);
4957 mac
->ops
.get_link_up_info(&adapter
->hw
,
4958 &adapter
->link_speed
,
4959 &adapter
->link_duplex
);
4960 e1000_print_link_info(adapter
);
4962 /* check if SmartSpeed worked */
4963 e1000e_check_downshift(hw
);
4964 if (phy
->speed_downgraded
)
4966 "Link Speed was downgraded by SmartSpeed\n");
4968 /* On supported PHYs, check for duplex mismatch only
4969 * if link has autonegotiated at 10/100 half
4971 if ((hw
->phy
.type
== e1000_phy_igp_3
||
4972 hw
->phy
.type
== e1000_phy_bm
) &&
4974 (adapter
->link_speed
== SPEED_10
||
4975 adapter
->link_speed
== SPEED_100
) &&
4976 (adapter
->link_duplex
== HALF_DUPLEX
)) {
4979 e1e_rphy(hw
, MII_EXPANSION
, &autoneg_exp
);
4981 if (!(autoneg_exp
& EXPANSION_NWAY
))
4982 e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n");
4985 /* adjust timeout factor according to speed/duplex */
4986 adapter
->tx_timeout_factor
= 1;
4987 switch (adapter
->link_speed
) {
4990 adapter
->tx_timeout_factor
= 16;
4994 adapter
->tx_timeout_factor
= 10;
4998 /* workaround: re-program speed mode bit after
5001 if ((adapter
->flags
& FLAG_TARC_SPEED_MODE_BIT
) &&
5005 tarc0
= er32(TARC(0));
5006 tarc0
&= ~SPEED_MODE_BIT
;
5007 ew32(TARC(0), tarc0
);
5010 /* disable TSO for pcie and 10/100 speeds, to avoid
5011 * some hardware issues
5013 if (!(adapter
->flags
& FLAG_TSO_FORCE
)) {
5014 switch (adapter
->link_speed
) {
5017 e_info("10/100 speed: disabling TSO\n");
5018 netdev
->features
&= ~NETIF_F_TSO
;
5019 netdev
->features
&= ~NETIF_F_TSO6
;
5022 netdev
->features
|= NETIF_F_TSO
;
5023 netdev
->features
|= NETIF_F_TSO6
;
5031 /* enable transmits in the hardware, need to do this
5032 * after setting TARC(0)
5035 tctl
|= E1000_TCTL_EN
;
5038 /* Perform any post-link-up configuration before
5039 * reporting link up.
5041 if (phy
->ops
.cfg_on_link_up
)
5042 phy
->ops
.cfg_on_link_up(hw
);
5044 netif_carrier_on(netdev
);
5046 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
5047 mod_timer(&adapter
->phy_info_timer
,
5048 round_jiffies(jiffies
+ 2 * HZ
));
5051 if (netif_carrier_ok(netdev
)) {
5052 adapter
->link_speed
= 0;
5053 adapter
->link_duplex
= 0;
5054 /* Link status message must follow this format */
5055 pr_info("%s NIC Link is Down\n", adapter
->netdev
->name
);
5056 netif_carrier_off(netdev
);
5057 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
5058 mod_timer(&adapter
->phy_info_timer
,
5059 round_jiffies(jiffies
+ 2 * HZ
));
5061 /* 8000ES2LAN requires a Rx packet buffer work-around
5062 * on link down event; reset the controller to flush
5063 * the Rx packet buffer.
5065 if (adapter
->flags
& FLAG_RX_NEEDS_RESTART
)
5066 adapter
->flags
|= FLAG_RESTART_NOW
;
5068 pm_schedule_suspend(netdev
->dev
.parent
,
5074 spin_lock(&adapter
->stats64_lock
);
5075 e1000e_update_stats(adapter
);
5077 mac
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
5078 adapter
->tpt_old
= adapter
->stats
.tpt
;
5079 mac
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
5080 adapter
->colc_old
= adapter
->stats
.colc
;
5082 adapter
->gorc
= adapter
->stats
.gorc
- adapter
->gorc_old
;
5083 adapter
->gorc_old
= adapter
->stats
.gorc
;
5084 adapter
->gotc
= adapter
->stats
.gotc
- adapter
->gotc_old
;
5085 adapter
->gotc_old
= adapter
->stats
.gotc
;
5086 spin_unlock(&adapter
->stats64_lock
);
5088 /* If the link is lost the controller stops DMA, but
5089 * if there is queued Tx work it cannot be done. So
5090 * reset the controller to flush the Tx packet buffers.
5092 if (!netif_carrier_ok(netdev
) &&
5093 (e1000_desc_unused(tx_ring
) + 1 < tx_ring
->count
))
5094 adapter
->flags
|= FLAG_RESTART_NOW
;
5096 /* If reset is necessary, do it outside of interrupt context. */
5097 if (adapter
->flags
& FLAG_RESTART_NOW
) {
5098 schedule_work(&adapter
->reset_task
);
5099 /* return immediately since reset is imminent */
5103 e1000e_update_adaptive(&adapter
->hw
);
5105 /* Simple mode for Interrupt Throttle Rate (ITR) */
5106 if (adapter
->itr_setting
== 4) {
5107 /* Symmetric Tx/Rx gets a reduced ITR=2000;
5108 * Total asymmetrical Tx or Rx gets ITR=8000;
5109 * everyone else is between 2000-8000.
5111 u32 goc
= (adapter
->gotc
+ adapter
->gorc
) / 10000;
5112 u32 dif
= (adapter
->gotc
> adapter
->gorc
?
5113 adapter
->gotc
- adapter
->gorc
:
5114 adapter
->gorc
- adapter
->gotc
) / 10000;
5115 u32 itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
5117 e1000e_write_itr(adapter
, itr
);
5120 /* Cause software interrupt to ensure Rx ring is cleaned */
5121 if (adapter
->msix_entries
)
5122 ew32(ICS
, adapter
->rx_ring
->ims_val
);
5124 ew32(ICS
, E1000_ICS_RXDMT0
);
5126 /* flush pending descriptors to memory before detecting Tx hang */
5127 e1000e_flush_descriptors(adapter
);
5129 /* Force detection of hung controller every watchdog period */
5130 adapter
->detect_tx_hung
= true;
5132 /* With 82571 controllers, LAA may be overwritten due to controller
5133 * reset from the other port. Set the appropriate LAA in RAR[0]
5135 if (e1000e_get_laa_state_82571(hw
))
5136 hw
->mac
.ops
.rar_set(hw
, adapter
->hw
.mac
.addr
, 0);
5138 if (adapter
->flags2
& FLAG2_CHECK_PHY_HANG
)
5139 e1000e_check_82574_phy_workaround(adapter
);
5141 /* Clear valid timestamp stuck in RXSTMPL/H due to a Rx error */
5142 if (adapter
->hwtstamp_config
.rx_filter
!= HWTSTAMP_FILTER_NONE
) {
5143 if ((adapter
->flags2
& FLAG2_CHECK_RX_HWTSTAMP
) &&
5144 (er32(TSYNCRXCTL
) & E1000_TSYNCRXCTL_VALID
)) {
5146 adapter
->rx_hwtstamp_cleared
++;
5148 adapter
->flags2
|= FLAG2_CHECK_RX_HWTSTAMP
;
5152 /* Reset the timer */
5153 if (!test_bit(__E1000_DOWN
, &adapter
->state
))
5154 mod_timer(&adapter
->watchdog_timer
,
5155 round_jiffies(jiffies
+ 2 * HZ
));
5158 #define E1000_TX_FLAGS_CSUM 0x00000001
5159 #define E1000_TX_FLAGS_VLAN 0x00000002
5160 #define E1000_TX_FLAGS_TSO 0x00000004
5161 #define E1000_TX_FLAGS_IPV4 0x00000008
5162 #define E1000_TX_FLAGS_NO_FCS 0x00000010
5163 #define E1000_TX_FLAGS_HWTSTAMP 0x00000020
5164 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
5165 #define E1000_TX_FLAGS_VLAN_SHIFT 16
5167 static int e1000_tso(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
)
5169 struct e1000_context_desc
*context_desc
;
5170 struct e1000_buffer
*buffer_info
;
5174 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
5177 if (!skb_is_gso(skb
))
5180 err
= skb_cow_head(skb
, 0);
5184 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
5185 mss
= skb_shinfo(skb
)->gso_size
;
5186 if (skb
->protocol
== htons(ETH_P_IP
)) {
5187 struct iphdr
*iph
= ip_hdr(skb
);
5190 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
, iph
->daddr
,
5192 cmd_length
= E1000_TXD_CMD_IP
;
5193 ipcse
= skb_transport_offset(skb
) - 1;
5194 } else if (skb_is_gso_v6(skb
)) {
5195 ipv6_hdr(skb
)->payload_len
= 0;
5196 tcp_hdr(skb
)->check
= ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
5197 &ipv6_hdr(skb
)->daddr
,
5201 ipcss
= skb_network_offset(skb
);
5202 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
5203 tucss
= skb_transport_offset(skb
);
5204 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
5206 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
5207 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
5209 i
= tx_ring
->next_to_use
;
5210 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
5211 buffer_info
= &tx_ring
->buffer_info
[i
];
5213 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
5214 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
5215 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
5216 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
5217 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
5218 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
5219 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
5220 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
5221 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
5223 buffer_info
->time_stamp
= jiffies
;
5224 buffer_info
->next_to_watch
= i
;
5227 if (i
== tx_ring
->count
)
5229 tx_ring
->next_to_use
= i
;
5234 static bool e1000_tx_csum(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
)
5236 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5237 struct e1000_context_desc
*context_desc
;
5238 struct e1000_buffer
*buffer_info
;
5241 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
5244 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
5247 if (skb
->protocol
== cpu_to_be16(ETH_P_8021Q
))
5248 protocol
= vlan_eth_hdr(skb
)->h_vlan_encapsulated_proto
;
5250 protocol
= skb
->protocol
;
5253 case cpu_to_be16(ETH_P_IP
):
5254 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
5255 cmd_len
|= E1000_TXD_CMD_TCP
;
5257 case cpu_to_be16(ETH_P_IPV6
):
5258 /* XXX not handling all IPV6 headers */
5259 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
5260 cmd_len
|= E1000_TXD_CMD_TCP
;
5263 if (unlikely(net_ratelimit()))
5264 e_warn("checksum_partial proto=%x!\n",
5265 be16_to_cpu(protocol
));
5269 css
= skb_checksum_start_offset(skb
);
5271 i
= tx_ring
->next_to_use
;
5272 buffer_info
= &tx_ring
->buffer_info
[i
];
5273 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
5275 context_desc
->lower_setup
.ip_config
= 0;
5276 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
5277 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum_offset
;
5278 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
5279 context_desc
->tcp_seg_setup
.data
= 0;
5280 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
5282 buffer_info
->time_stamp
= jiffies
;
5283 buffer_info
->next_to_watch
= i
;
5286 if (i
== tx_ring
->count
)
5288 tx_ring
->next_to_use
= i
;
5293 static int e1000_tx_map(struct e1000_ring
*tx_ring
, struct sk_buff
*skb
,
5294 unsigned int first
, unsigned int max_per_txd
,
5295 unsigned int nr_frags
)
5297 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5298 struct pci_dev
*pdev
= adapter
->pdev
;
5299 struct e1000_buffer
*buffer_info
;
5300 unsigned int len
= skb_headlen(skb
);
5301 unsigned int offset
= 0, size
, count
= 0, i
;
5302 unsigned int f
, bytecount
, segs
;
5304 i
= tx_ring
->next_to_use
;
5307 buffer_info
= &tx_ring
->buffer_info
[i
];
5308 size
= min(len
, max_per_txd
);
5310 buffer_info
->length
= size
;
5311 buffer_info
->time_stamp
= jiffies
;
5312 buffer_info
->next_to_watch
= i
;
5313 buffer_info
->dma
= dma_map_single(&pdev
->dev
,
5315 size
, DMA_TO_DEVICE
);
5316 buffer_info
->mapped_as_page
= false;
5317 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
5326 if (i
== tx_ring
->count
)
5331 for (f
= 0; f
< nr_frags
; f
++) {
5332 const struct skb_frag_struct
*frag
;
5334 frag
= &skb_shinfo(skb
)->frags
[f
];
5335 len
= skb_frag_size(frag
);
5340 if (i
== tx_ring
->count
)
5343 buffer_info
= &tx_ring
->buffer_info
[i
];
5344 size
= min(len
, max_per_txd
);
5346 buffer_info
->length
= size
;
5347 buffer_info
->time_stamp
= jiffies
;
5348 buffer_info
->next_to_watch
= i
;
5349 buffer_info
->dma
= skb_frag_dma_map(&pdev
->dev
, frag
,
5352 buffer_info
->mapped_as_page
= true;
5353 if (dma_mapping_error(&pdev
->dev
, buffer_info
->dma
))
5362 segs
= skb_shinfo(skb
)->gso_segs
? : 1;
5363 /* multiply data chunks by size of headers */
5364 bytecount
= ((segs
- 1) * skb_headlen(skb
)) + skb
->len
;
5366 tx_ring
->buffer_info
[i
].skb
= skb
;
5367 tx_ring
->buffer_info
[i
].segs
= segs
;
5368 tx_ring
->buffer_info
[i
].bytecount
= bytecount
;
5369 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
5374 dev_err(&pdev
->dev
, "Tx DMA map failed\n");
5375 buffer_info
->dma
= 0;
5381 i
+= tx_ring
->count
;
5383 buffer_info
= &tx_ring
->buffer_info
[i
];
5384 e1000_put_txbuf(tx_ring
, buffer_info
);
5390 static void e1000_tx_queue(struct e1000_ring
*tx_ring
, int tx_flags
, int count
)
5392 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5393 struct e1000_tx_desc
*tx_desc
= NULL
;
5394 struct e1000_buffer
*buffer_info
;
5395 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
5398 if (tx_flags
& E1000_TX_FLAGS_TSO
) {
5399 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
5401 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
5403 if (tx_flags
& E1000_TX_FLAGS_IPV4
)
5404 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
5407 if (tx_flags
& E1000_TX_FLAGS_CSUM
) {
5408 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
5409 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
5412 if (tx_flags
& E1000_TX_FLAGS_VLAN
) {
5413 txd_lower
|= E1000_TXD_CMD_VLE
;
5414 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
5417 if (unlikely(tx_flags
& E1000_TX_FLAGS_NO_FCS
))
5418 txd_lower
&= ~(E1000_TXD_CMD_IFCS
);
5420 if (unlikely(tx_flags
& E1000_TX_FLAGS_HWTSTAMP
)) {
5421 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
5422 txd_upper
|= E1000_TXD_EXTCMD_TSTAMP
;
5425 i
= tx_ring
->next_to_use
;
5428 buffer_info
= &tx_ring
->buffer_info
[i
];
5429 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
5430 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
5431 tx_desc
->lower
.data
= cpu_to_le32(txd_lower
|
5432 buffer_info
->length
);
5433 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
5436 if (i
== tx_ring
->count
)
5438 } while (--count
> 0);
5440 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
5442 /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */
5443 if (unlikely(tx_flags
& E1000_TX_FLAGS_NO_FCS
))
5444 tx_desc
->lower
.data
&= ~(cpu_to_le32(E1000_TXD_CMD_IFCS
));
5446 /* Force memory writes to complete before letting h/w
5447 * know there are new descriptors to fetch. (Only
5448 * applicable for weak-ordered memory model archs,
5453 tx_ring
->next_to_use
= i
;
5455 if (adapter
->flags2
& FLAG2_PCIM2PCI_ARBITER_WA
)
5456 e1000e_update_tdt_wa(tx_ring
, i
);
5458 writel(i
, tx_ring
->tail
);
5460 /* we need this if more than one processor can write to our tail
5461 * at a time, it synchronizes IO on IA64/Altix systems
5466 #define MINIMUM_DHCP_PACKET_SIZE 282
5467 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
5468 struct sk_buff
*skb
)
5470 struct e1000_hw
*hw
= &adapter
->hw
;
5473 if (vlan_tx_tag_present(skb
) &&
5474 !((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
5475 (adapter
->hw
.mng_cookie
.status
&
5476 E1000_MNG_DHCP_COOKIE_STATUS_VLAN
)))
5479 if (skb
->len
<= MINIMUM_DHCP_PACKET_SIZE
)
5482 if (((struct ethhdr
*)skb
->data
)->h_proto
!= htons(ETH_P_IP
))
5486 const struct iphdr
*ip
= (struct iphdr
*)((u8
*)skb
->data
+ 14);
5489 if (ip
->protocol
!= IPPROTO_UDP
)
5492 udp
= (struct udphdr
*)((u8
*)ip
+ (ip
->ihl
<< 2));
5493 if (ntohs(udp
->dest
) != 67)
5496 offset
= (u8
*)udp
+ 8 - skb
->data
;
5497 length
= skb
->len
- offset
;
5498 return e1000e_mng_write_dhcp_info(hw
, (u8
*)udp
+ 8, length
);
5504 static int __e1000_maybe_stop_tx(struct e1000_ring
*tx_ring
, int size
)
5506 struct e1000_adapter
*adapter
= tx_ring
->adapter
;
5508 netif_stop_queue(adapter
->netdev
);
5509 /* Herbert's original patch had:
5510 * smp_mb__after_netif_stop_queue();
5511 * but since that doesn't exist yet, just open code it.
5515 /* We need to check again in a case another CPU has just
5516 * made room available.
5518 if (e1000_desc_unused(tx_ring
) < size
)
5522 netif_start_queue(adapter
->netdev
);
5523 ++adapter
->restart_queue
;
5527 static int e1000_maybe_stop_tx(struct e1000_ring
*tx_ring
, int size
)
5529 BUG_ON(size
> tx_ring
->count
);
5531 if (e1000_desc_unused(tx_ring
) >= size
)
5533 return __e1000_maybe_stop_tx(tx_ring
, size
);
5536 static netdev_tx_t
e1000_xmit_frame(struct sk_buff
*skb
,
5537 struct net_device
*netdev
)
5539 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5540 struct e1000_ring
*tx_ring
= adapter
->tx_ring
;
5542 unsigned int tx_flags
= 0;
5543 unsigned int len
= skb_headlen(skb
);
5544 unsigned int nr_frags
;
5550 if (test_bit(__E1000_DOWN
, &adapter
->state
)) {
5551 dev_kfree_skb_any(skb
);
5552 return NETDEV_TX_OK
;
5555 if (skb
->len
<= 0) {
5556 dev_kfree_skb_any(skb
);
5557 return NETDEV_TX_OK
;
5560 /* The minimum packet size with TCTL.PSP set is 17 bytes so
5561 * pad skb in order to meet this minimum size requirement
5563 if (unlikely(skb
->len
< 17)) {
5564 if (skb_pad(skb
, 17 - skb
->len
))
5565 return NETDEV_TX_OK
;
5567 skb_set_tail_pointer(skb
, 17);
5570 mss
= skb_shinfo(skb
)->gso_size
;
5574 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
5575 * points to just header, pull a few bytes of payload from
5576 * frags into skb->data
5578 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
5579 /* we do this workaround for ES2LAN, but it is un-necessary,
5580 * avoiding it could save a lot of cycles
5582 if (skb
->data_len
&& (hdr_len
== len
)) {
5583 unsigned int pull_size
;
5585 pull_size
= min_t(unsigned int, 4, skb
->data_len
);
5586 if (!__pskb_pull_tail(skb
, pull_size
)) {
5587 e_err("__pskb_pull_tail failed.\n");
5588 dev_kfree_skb_any(skb
);
5589 return NETDEV_TX_OK
;
5591 len
= skb_headlen(skb
);
5595 /* reserve a descriptor for the offload context */
5596 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
5600 count
+= DIV_ROUND_UP(len
, adapter
->tx_fifo_limit
);
5602 nr_frags
= skb_shinfo(skb
)->nr_frags
;
5603 for (f
= 0; f
< nr_frags
; f
++)
5604 count
+= DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb
)->frags
[f
]),
5605 adapter
->tx_fifo_limit
);
5607 if (adapter
->hw
.mac
.tx_pkt_filtering
)
5608 e1000_transfer_dhcp_info(adapter
, skb
);
5610 /* need: count + 2 desc gap to keep tail from touching
5611 * head, otherwise try next time
5613 if (e1000_maybe_stop_tx(tx_ring
, count
+ 2))
5614 return NETDEV_TX_BUSY
;
5616 if (vlan_tx_tag_present(skb
)) {
5617 tx_flags
|= E1000_TX_FLAGS_VLAN
;
5618 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
5621 first
= tx_ring
->next_to_use
;
5623 tso
= e1000_tso(tx_ring
, skb
);
5625 dev_kfree_skb_any(skb
);
5626 return NETDEV_TX_OK
;
5630 tx_flags
|= E1000_TX_FLAGS_TSO
;
5631 else if (e1000_tx_csum(tx_ring
, skb
))
5632 tx_flags
|= E1000_TX_FLAGS_CSUM
;
5634 /* Old method was to assume IPv4 packet by default if TSO was enabled.
5635 * 82571 hardware supports TSO capabilities for IPv6 as well...
5636 * no longer assume, we must.
5638 if (skb
->protocol
== htons(ETH_P_IP
))
5639 tx_flags
|= E1000_TX_FLAGS_IPV4
;
5641 if (unlikely(skb
->no_fcs
))
5642 tx_flags
|= E1000_TX_FLAGS_NO_FCS
;
5644 /* if count is 0 then mapping error has occurred */
5645 count
= e1000_tx_map(tx_ring
, skb
, first
, adapter
->tx_fifo_limit
,
5648 if (unlikely((skb_shinfo(skb
)->tx_flags
& SKBTX_HW_TSTAMP
) &&
5649 !adapter
->tx_hwtstamp_skb
)) {
5650 skb_shinfo(skb
)->tx_flags
|= SKBTX_IN_PROGRESS
;
5651 tx_flags
|= E1000_TX_FLAGS_HWTSTAMP
;
5652 adapter
->tx_hwtstamp_skb
= skb_get(skb
);
5653 adapter
->tx_hwtstamp_start
= jiffies
;
5654 schedule_work(&adapter
->tx_hwtstamp_work
);
5656 skb_tx_timestamp(skb
);
5659 netdev_sent_queue(netdev
, skb
->len
);
5660 e1000_tx_queue(tx_ring
, tx_flags
, count
);
5661 /* Make sure there is space in the ring for the next send. */
5662 e1000_maybe_stop_tx(tx_ring
,
5664 DIV_ROUND_UP(PAGE_SIZE
,
5665 adapter
->tx_fifo_limit
) + 2));
5667 dev_kfree_skb_any(skb
);
5668 tx_ring
->buffer_info
[first
].time_stamp
= 0;
5669 tx_ring
->next_to_use
= first
;
5672 return NETDEV_TX_OK
;
5676 * e1000_tx_timeout - Respond to a Tx Hang
5677 * @netdev: network interface device structure
5679 static void e1000_tx_timeout(struct net_device
*netdev
)
5681 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5683 /* Do the reset outside of interrupt context */
5684 adapter
->tx_timeout_count
++;
5685 schedule_work(&adapter
->reset_task
);
5688 static void e1000_reset_task(struct work_struct
*work
)
5690 struct e1000_adapter
*adapter
;
5691 adapter
= container_of(work
, struct e1000_adapter
, reset_task
);
5693 /* don't run the task if already down */
5694 if (test_bit(__E1000_DOWN
, &adapter
->state
))
5697 if (!(adapter
->flags
& FLAG_RESTART_NOW
)) {
5698 e1000e_dump(adapter
);
5699 e_err("Reset adapter unexpectedly\n");
5701 e1000e_reinit_locked(adapter
);
5705 * e1000_get_stats64 - Get System Network Statistics
5706 * @netdev: network interface device structure
5707 * @stats: rtnl_link_stats64 pointer
5709 * Returns the address of the device statistics structure.
5711 struct rtnl_link_stats64
*e1000e_get_stats64(struct net_device
*netdev
,
5712 struct rtnl_link_stats64
*stats
)
5714 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5716 memset(stats
, 0, sizeof(struct rtnl_link_stats64
));
5717 spin_lock(&adapter
->stats64_lock
);
5718 e1000e_update_stats(adapter
);
5719 /* Fill out the OS statistics structure */
5720 stats
->rx_bytes
= adapter
->stats
.gorc
;
5721 stats
->rx_packets
= adapter
->stats
.gprc
;
5722 stats
->tx_bytes
= adapter
->stats
.gotc
;
5723 stats
->tx_packets
= adapter
->stats
.gptc
;
5724 stats
->multicast
= adapter
->stats
.mprc
;
5725 stats
->collisions
= adapter
->stats
.colc
;
5729 /* RLEC on some newer hardware can be incorrect so build
5730 * our own version based on RUC and ROC
5732 stats
->rx_errors
= adapter
->stats
.rxerrc
+
5733 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
5734 adapter
->stats
.ruc
+ adapter
->stats
.roc
+ adapter
->stats
.cexterr
;
5735 stats
->rx_length_errors
= adapter
->stats
.ruc
+ adapter
->stats
.roc
;
5736 stats
->rx_crc_errors
= adapter
->stats
.crcerrs
;
5737 stats
->rx_frame_errors
= adapter
->stats
.algnerrc
;
5738 stats
->rx_missed_errors
= adapter
->stats
.mpc
;
5741 stats
->tx_errors
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
5742 stats
->tx_aborted_errors
= adapter
->stats
.ecol
;
5743 stats
->tx_window_errors
= adapter
->stats
.latecol
;
5744 stats
->tx_carrier_errors
= adapter
->stats
.tncrs
;
5746 /* Tx Dropped needs to be maintained elsewhere */
5748 spin_unlock(&adapter
->stats64_lock
);
5753 * e1000_change_mtu - Change the Maximum Transfer Unit
5754 * @netdev: network interface device structure
5755 * @new_mtu: new value for maximum frame size
5757 * Returns 0 on success, negative on failure
5759 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
5761 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5762 int max_frame
= new_mtu
+ VLAN_HLEN
+ ETH_HLEN
+ ETH_FCS_LEN
;
5764 /* Jumbo frame support */
5765 if ((max_frame
> ETH_FRAME_LEN
+ ETH_FCS_LEN
) &&
5766 !(adapter
->flags
& FLAG_HAS_JUMBO_FRAMES
)) {
5767 e_err("Jumbo Frames not supported.\n");
5771 /* Supported frame sizes */
5772 if ((new_mtu
< ETH_ZLEN
+ ETH_FCS_LEN
+ VLAN_HLEN
) ||
5773 (max_frame
> adapter
->max_hw_frame_size
)) {
5774 e_err("Unsupported MTU setting\n");
5778 /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */
5779 if ((adapter
->hw
.mac
.type
>= e1000_pch2lan
) &&
5780 !(adapter
->flags2
& FLAG2_CRC_STRIPPING
) &&
5781 (new_mtu
> ETH_DATA_LEN
)) {
5782 e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n");
5786 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->state
))
5787 usleep_range(1000, 2000);
5788 /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
5789 adapter
->max_frame_size
= max_frame
;
5790 e_info("changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
5791 netdev
->mtu
= new_mtu
;
5793 pm_runtime_get_sync(netdev
->dev
.parent
);
5795 if (netif_running(netdev
))
5796 e1000e_down(adapter
, true);
5798 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
5799 * means we reserve 2 more, this pushes us to allocate from the next
5801 * i.e. RXBUFFER_2048 --> size-4096 slab
5802 * However with the new *_jumbo_rx* routines, jumbo receives will use
5806 if (max_frame
<= 2048)
5807 adapter
->rx_buffer_len
= 2048;
5809 adapter
->rx_buffer_len
= 4096;
5811 /* adjust allocation if LPE protects us, and we aren't using SBP */
5812 if ((max_frame
== ETH_FRAME_LEN
+ ETH_FCS_LEN
) ||
5813 (max_frame
== ETH_FRAME_LEN
+ VLAN_HLEN
+ ETH_FCS_LEN
))
5814 adapter
->rx_buffer_len
= ETH_FRAME_LEN
+ VLAN_HLEN
5817 if (netif_running(netdev
))
5820 e1000e_reset(adapter
);
5822 pm_runtime_put_sync(netdev
->dev
.parent
);
5824 clear_bit(__E1000_RESETTING
, &adapter
->state
);
5829 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
5832 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5833 struct mii_ioctl_data
*data
= if_mii(ifr
);
5835 if (adapter
->hw
.phy
.media_type
!= e1000_media_type_copper
)
5840 data
->phy_id
= adapter
->hw
.phy
.addr
;
5843 e1000_phy_read_status(adapter
);
5845 switch (data
->reg_num
& 0x1F) {
5847 data
->val_out
= adapter
->phy_regs
.bmcr
;
5850 data
->val_out
= adapter
->phy_regs
.bmsr
;
5853 data
->val_out
= (adapter
->hw
.phy
.id
>> 16);
5856 data
->val_out
= (adapter
->hw
.phy
.id
& 0xFFFF);
5859 data
->val_out
= adapter
->phy_regs
.advertise
;
5862 data
->val_out
= adapter
->phy_regs
.lpa
;
5865 data
->val_out
= adapter
->phy_regs
.expansion
;
5868 data
->val_out
= adapter
->phy_regs
.ctrl1000
;
5871 data
->val_out
= adapter
->phy_regs
.stat1000
;
5874 data
->val_out
= adapter
->phy_regs
.estatus
;
5888 * e1000e_hwtstamp_ioctl - control hardware time stamping
5889 * @netdev: network interface device structure
5890 * @ifreq: interface request
5892 * Outgoing time stamping can be enabled and disabled. Play nice and
5893 * disable it when requested, although it shouldn't cause any overhead
5894 * when no packet needs it. At most one packet in the queue may be
5895 * marked for time stamping, otherwise it would be impossible to tell
5896 * for sure to which packet the hardware time stamp belongs.
5898 * Incoming time stamping has to be configured via the hardware filters.
5899 * Not all combinations are supported, in particular event type has to be
5900 * specified. Matching the kind of event packet is not supported, with the
5901 * exception of "all V2 events regardless of level 2 or 4".
5903 static int e1000e_hwtstamp_set(struct net_device
*netdev
, struct ifreq
*ifr
)
5905 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5906 struct hwtstamp_config config
;
5909 if (copy_from_user(&config
, ifr
->ifr_data
, sizeof(config
)))
5912 ret_val
= e1000e_config_hwtstamp(adapter
, &config
);
5916 switch (config
.rx_filter
) {
5917 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC
:
5918 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC
:
5919 case HWTSTAMP_FILTER_PTP_V2_SYNC
:
5920 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ
:
5921 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ
:
5922 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ
:
5923 /* With V2 type filters which specify a Sync or Delay Request,
5924 * Path Delay Request/Response messages are also time stamped
5925 * by hardware so notify the caller the requested packets plus
5926 * some others are time stamped.
5928 config
.rx_filter
= HWTSTAMP_FILTER_SOME
;
5934 return copy_to_user(ifr
->ifr_data
, &config
,
5935 sizeof(config
)) ? -EFAULT
: 0;
5938 static int e1000e_hwtstamp_get(struct net_device
*netdev
, struct ifreq
*ifr
)
5940 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5942 return copy_to_user(ifr
->ifr_data
, &adapter
->hwtstamp_config
,
5943 sizeof(adapter
->hwtstamp_config
)) ? -EFAULT
: 0;
5946 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
5952 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
5954 return e1000e_hwtstamp_set(netdev
, ifr
);
5956 return e1000e_hwtstamp_get(netdev
, ifr
);
5962 static int e1000_init_phy_wakeup(struct e1000_adapter
*adapter
, u32 wufc
)
5964 struct e1000_hw
*hw
= &adapter
->hw
;
5965 u32 i
, mac_reg
, wuc
;
5966 u16 phy_reg
, wuc_enable
;
5969 /* copy MAC RARs to PHY RARs */
5970 e1000_copy_rx_addrs_to_phy_ich8lan(hw
);
5972 retval
= hw
->phy
.ops
.acquire(hw
);
5974 e_err("Could not acquire PHY\n");
5978 /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
5979 retval
= e1000_enable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
5983 /* copy MAC MTA to PHY MTA - only needed for pchlan */
5984 for (i
= 0; i
< adapter
->hw
.mac
.mta_reg_count
; i
++) {
5985 mac_reg
= E1000_READ_REG_ARRAY(hw
, E1000_MTA
, i
);
5986 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
),
5987 (u16
)(mac_reg
& 0xFFFF));
5988 hw
->phy
.ops
.write_reg_page(hw
, BM_MTA(i
) + 1,
5989 (u16
)((mac_reg
>> 16) & 0xFFFF));
5992 /* configure PHY Rx Control register */
5993 hw
->phy
.ops
.read_reg_page(&adapter
->hw
, BM_RCTL
, &phy_reg
);
5994 mac_reg
= er32(RCTL
);
5995 if (mac_reg
& E1000_RCTL_UPE
)
5996 phy_reg
|= BM_RCTL_UPE
;
5997 if (mac_reg
& E1000_RCTL_MPE
)
5998 phy_reg
|= BM_RCTL_MPE
;
5999 phy_reg
&= ~(BM_RCTL_MO_MASK
);
6000 if (mac_reg
& E1000_RCTL_MO_3
)
6001 phy_reg
|= (((mac_reg
& E1000_RCTL_MO_3
) >> E1000_RCTL_MO_SHIFT
)
6002 << BM_RCTL_MO_SHIFT
);
6003 if (mac_reg
& E1000_RCTL_BAM
)
6004 phy_reg
|= BM_RCTL_BAM
;
6005 if (mac_reg
& E1000_RCTL_PMCF
)
6006 phy_reg
|= BM_RCTL_PMCF
;
6007 mac_reg
= er32(CTRL
);
6008 if (mac_reg
& E1000_CTRL_RFCE
)
6009 phy_reg
|= BM_RCTL_RFCE
;
6010 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_RCTL
, phy_reg
);
6012 wuc
= E1000_WUC_PME_EN
;
6013 if (wufc
& (E1000_WUFC_MAG
| E1000_WUFC_LNKC
))
6014 wuc
|= E1000_WUC_APME
;
6016 /* enable PHY wakeup in MAC register */
6018 ew32(WUC
, (E1000_WUC_PHY_WAKE
| E1000_WUC_APMPME
|
6019 E1000_WUC_PME_STATUS
| wuc
));
6021 /* configure and enable PHY wakeup in PHY registers */
6022 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUFC
, wufc
);
6023 hw
->phy
.ops
.write_reg_page(&adapter
->hw
, BM_WUC
, wuc
);
6025 /* activate PHY wakeup */
6026 wuc_enable
|= BM_WUC_ENABLE_BIT
| BM_WUC_HOST_WU_BIT
;
6027 retval
= e1000_disable_phy_wakeup_reg_access_bm(hw
, &wuc_enable
);
6029 e_err("Could not set PHY Host Wakeup bit\n");
6031 hw
->phy
.ops
.release(hw
);
6036 static int e1000e_pm_freeze(struct device
*dev
)
6038 struct net_device
*netdev
= pci_get_drvdata(to_pci_dev(dev
));
6039 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6041 netif_device_detach(netdev
);
6043 if (netif_running(netdev
)) {
6044 int count
= E1000_CHECK_RESET_COUNT
;
6046 while (test_bit(__E1000_RESETTING
, &adapter
->state
) && count
--)
6047 usleep_range(10000, 20000);
6049 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
6051 /* Quiesce the device without resetting the hardware */
6052 e1000e_down(adapter
, false);
6053 e1000_free_irq(adapter
);
6055 e1000e_reset_interrupt_capability(adapter
);
6057 /* Allow time for pending master requests to run */
6058 e1000e_disable_pcie_master(&adapter
->hw
);
6063 static int __e1000_shutdown(struct pci_dev
*pdev
, bool runtime
)
6065 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6066 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6067 struct e1000_hw
*hw
= &adapter
->hw
;
6068 u32 ctrl
, ctrl_ext
, rctl
, status
;
6069 /* Runtime suspend should only enable wakeup for link changes */
6070 u32 wufc
= runtime
? E1000_WUFC_LNKC
: adapter
->wol
;
6073 status
= er32(STATUS
);
6074 if (status
& E1000_STATUS_LU
)
6075 wufc
&= ~E1000_WUFC_LNKC
;
6078 e1000_setup_rctl(adapter
);
6079 e1000e_set_rx_mode(netdev
);
6081 /* turn on all-multi mode if wake on multicast is enabled */
6082 if (wufc
& E1000_WUFC_MC
) {
6084 rctl
|= E1000_RCTL_MPE
;
6089 ctrl
|= E1000_CTRL_ADVD3WUC
;
6090 if (!(adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
))
6091 ctrl
|= E1000_CTRL_EN_PHY_PWR_MGMT
;
6094 if (adapter
->hw
.phy
.media_type
== e1000_media_type_fiber
||
6095 adapter
->hw
.phy
.media_type
==
6096 e1000_media_type_internal_serdes
) {
6097 /* keep the laser running in D3 */
6098 ctrl_ext
= er32(CTRL_EXT
);
6099 ctrl_ext
|= E1000_CTRL_EXT_SDP3_DATA
;
6100 ew32(CTRL_EXT
, ctrl_ext
);
6104 e1000e_power_up_phy(adapter
);
6106 if (adapter
->flags
& FLAG_IS_ICH
)
6107 e1000_suspend_workarounds_ich8lan(&adapter
->hw
);
6109 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
6110 /* enable wakeup by the PHY */
6111 retval
= e1000_init_phy_wakeup(adapter
, wufc
);
6115 /* enable wakeup by the MAC */
6117 ew32(WUC
, E1000_WUC_PME_EN
);
6123 e1000_power_down_phy(adapter
);
6126 if (adapter
->hw
.phy
.type
== e1000_phy_igp_3
) {
6127 e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter
->hw
);
6128 } else if (hw
->mac
.type
== e1000_pch_lpt
) {
6129 if (!(wufc
& (E1000_WUFC_EX
| E1000_WUFC_MC
| E1000_WUFC_BC
)))
6130 /* ULP does not support wake from unicast, multicast
6133 retval
= e1000_enable_ulp_lpt_lp(hw
, !runtime
);
6140 /* Release control of h/w to f/w. If f/w is AMT enabled, this
6141 * would have already happened in close and is redundant.
6143 e1000e_release_hw_control(adapter
);
6145 pci_clear_master(pdev
);
6147 /* The pci-e switch on some quad port adapters will report a
6148 * correctable error when the MAC transitions from D0 to D3. To
6149 * prevent this we need to mask off the correctable errors on the
6150 * downstream port of the pci-e switch.
6152 * We don't have the associated upstream bridge while assigning
6153 * the PCI device into guest. For example, the KVM on power is
6156 if (adapter
->flags
& FLAG_IS_QUAD_PORT
) {
6157 struct pci_dev
*us_dev
= pdev
->bus
->self
;
6163 pcie_capability_read_word(us_dev
, PCI_EXP_DEVCTL
, &devctl
);
6164 pcie_capability_write_word(us_dev
, PCI_EXP_DEVCTL
,
6165 (devctl
& ~PCI_EXP_DEVCTL_CERE
));
6167 pci_save_state(pdev
);
6168 pci_prepare_to_sleep(pdev
);
6170 pcie_capability_write_word(us_dev
, PCI_EXP_DEVCTL
, devctl
);
6177 * e1000e_disable_aspm - Disable ASPM states
6178 * @pdev: pointer to PCI device struct
6179 * @state: bit-mask of ASPM states to disable
6181 * Some devices *must* have certain ASPM states disabled per hardware errata.
6183 static void e1000e_disable_aspm(struct pci_dev
*pdev
, u16 state
)
6185 struct pci_dev
*parent
= pdev
->bus
->self
;
6186 u16 aspm_dis_mask
= 0;
6187 u16 pdev_aspmc
, parent_aspmc
;
6190 case PCIE_LINK_STATE_L0S
:
6191 case PCIE_LINK_STATE_L0S
| PCIE_LINK_STATE_L1
:
6192 aspm_dis_mask
|= PCI_EXP_LNKCTL_ASPM_L0S
;
6193 /* fall-through - can't have L1 without L0s */
6194 case PCIE_LINK_STATE_L1
:
6195 aspm_dis_mask
|= PCI_EXP_LNKCTL_ASPM_L1
;
6201 pcie_capability_read_word(pdev
, PCI_EXP_LNKCTL
, &pdev_aspmc
);
6202 pdev_aspmc
&= PCI_EXP_LNKCTL_ASPMC
;
6205 pcie_capability_read_word(parent
, PCI_EXP_LNKCTL
,
6207 parent_aspmc
&= PCI_EXP_LNKCTL_ASPMC
;
6210 /* Nothing to do if the ASPM states to be disabled already are */
6211 if (!(pdev_aspmc
& aspm_dis_mask
) &&
6212 (!parent
|| !(parent_aspmc
& aspm_dis_mask
)))
6215 dev_info(&pdev
->dev
, "Disabling ASPM %s %s\n",
6216 (aspm_dis_mask
& pdev_aspmc
& PCI_EXP_LNKCTL_ASPM_L0S
) ?
6218 (aspm_dis_mask
& pdev_aspmc
& PCI_EXP_LNKCTL_ASPM_L1
) ?
6221 #ifdef CONFIG_PCIEASPM
6222 pci_disable_link_state_locked(pdev
, state
);
6224 /* Double-check ASPM control. If not disabled by the above, the
6225 * BIOS is preventing that from happening (or CONFIG_PCIEASPM is
6226 * not enabled); override by writing PCI config space directly.
6228 pcie_capability_read_word(pdev
, PCI_EXP_LNKCTL
, &pdev_aspmc
);
6229 pdev_aspmc
&= PCI_EXP_LNKCTL_ASPMC
;
6231 if (!(aspm_dis_mask
& pdev_aspmc
))
6235 /* Both device and parent should have the same ASPM setting.
6236 * Disable ASPM in downstream component first and then upstream.
6238 pcie_capability_clear_word(pdev
, PCI_EXP_LNKCTL
, aspm_dis_mask
);
6241 pcie_capability_clear_word(parent
, PCI_EXP_LNKCTL
,
6246 static int __e1000_resume(struct pci_dev
*pdev
)
6248 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6249 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6250 struct e1000_hw
*hw
= &adapter
->hw
;
6251 u16 aspm_disable_flag
= 0;
6253 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6254 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6255 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6256 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6257 if (aspm_disable_flag
)
6258 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6260 pci_set_master(pdev
);
6262 if (hw
->mac
.type
>= e1000_pch2lan
)
6263 e1000_resume_workarounds_pchlan(&adapter
->hw
);
6265 e1000e_power_up_phy(adapter
);
6267 /* report the system wakeup cause from S3/S4 */
6268 if (adapter
->flags2
& FLAG2_HAS_PHY_WAKEUP
) {
6271 e1e_rphy(&adapter
->hw
, BM_WUS
, &phy_data
);
6273 e_info("PHY Wakeup cause - %s\n",
6274 phy_data
& E1000_WUS_EX
? "Unicast Packet" :
6275 phy_data
& E1000_WUS_MC
? "Multicast Packet" :
6276 phy_data
& E1000_WUS_BC
? "Broadcast Packet" :
6277 phy_data
& E1000_WUS_MAG
? "Magic Packet" :
6278 phy_data
& E1000_WUS_LNKC
?
6279 "Link Status Change" : "other");
6281 e1e_wphy(&adapter
->hw
, BM_WUS
, ~0);
6283 u32 wus
= er32(WUS
);
6286 e_info("MAC Wakeup cause - %s\n",
6287 wus
& E1000_WUS_EX
? "Unicast Packet" :
6288 wus
& E1000_WUS_MC
? "Multicast Packet" :
6289 wus
& E1000_WUS_BC
? "Broadcast Packet" :
6290 wus
& E1000_WUS_MAG
? "Magic Packet" :
6291 wus
& E1000_WUS_LNKC
? "Link Status Change" :
6297 e1000e_reset(adapter
);
6299 e1000_init_manageability_pt(adapter
);
6301 /* If the controller has AMT, do not set DRV_LOAD until the interface
6302 * is up. For all other cases, let the f/w know that the h/w is now
6303 * under the control of the driver.
6305 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6306 e1000e_get_hw_control(adapter
);
6311 #ifdef CONFIG_PM_SLEEP
6312 static int e1000e_pm_thaw(struct device
*dev
)
6314 struct net_device
*netdev
= pci_get_drvdata(to_pci_dev(dev
));
6315 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6317 e1000e_set_interrupt_capability(adapter
);
6318 if (netif_running(netdev
)) {
6319 u32 err
= e1000_request_irq(adapter
);
6327 netif_device_attach(netdev
);
6332 static int e1000e_pm_suspend(struct device
*dev
)
6334 struct pci_dev
*pdev
= to_pci_dev(dev
);
6336 e1000e_pm_freeze(dev
);
6338 return __e1000_shutdown(pdev
, false);
6341 static int e1000e_pm_resume(struct device
*dev
)
6343 struct pci_dev
*pdev
= to_pci_dev(dev
);
6346 rc
= __e1000_resume(pdev
);
6350 return e1000e_pm_thaw(dev
);
6352 #endif /* CONFIG_PM_SLEEP */
6354 #ifdef CONFIG_PM_RUNTIME
6355 static int e1000e_pm_runtime_idle(struct device
*dev
)
6357 struct pci_dev
*pdev
= to_pci_dev(dev
);
6358 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6359 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6362 eee_lp
= adapter
->hw
.dev_spec
.ich8lan
.eee_lp_ability
;
6364 if (!e1000e_has_link(adapter
)) {
6365 adapter
->hw
.dev_spec
.ich8lan
.eee_lp_ability
= eee_lp
;
6366 pm_schedule_suspend(dev
, 5 * MSEC_PER_SEC
);
6372 static int e1000e_pm_runtime_resume(struct device
*dev
)
6374 struct pci_dev
*pdev
= to_pci_dev(dev
);
6375 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6376 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6379 rc
= __e1000_resume(pdev
);
6383 if (netdev
->flags
& IFF_UP
)
6384 rc
= e1000e_up(adapter
);
6389 static int e1000e_pm_runtime_suspend(struct device
*dev
)
6391 struct pci_dev
*pdev
= to_pci_dev(dev
);
6392 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6393 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6395 if (netdev
->flags
& IFF_UP
) {
6396 int count
= E1000_CHECK_RESET_COUNT
;
6398 while (test_bit(__E1000_RESETTING
, &adapter
->state
) && count
--)
6399 usleep_range(10000, 20000);
6401 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->state
));
6403 /* Down the device without resetting the hardware */
6404 e1000e_down(adapter
, false);
6407 if (__e1000_shutdown(pdev
, true)) {
6408 e1000e_pm_runtime_resume(dev
);
6414 #endif /* CONFIG_PM_RUNTIME */
6415 #endif /* CONFIG_PM */
6417 static void e1000_shutdown(struct pci_dev
*pdev
)
6419 e1000e_pm_freeze(&pdev
->dev
);
6421 __e1000_shutdown(pdev
, false);
6424 #ifdef CONFIG_NET_POLL_CONTROLLER
6426 static irqreturn_t
e1000_intr_msix(int __always_unused irq
, void *data
)
6428 struct net_device
*netdev
= data
;
6429 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6431 if (adapter
->msix_entries
) {
6432 int vector
, msix_irq
;
6435 msix_irq
= adapter
->msix_entries
[vector
].vector
;
6436 disable_irq(msix_irq
);
6437 e1000_intr_msix_rx(msix_irq
, netdev
);
6438 enable_irq(msix_irq
);
6441 msix_irq
= adapter
->msix_entries
[vector
].vector
;
6442 disable_irq(msix_irq
);
6443 e1000_intr_msix_tx(msix_irq
, netdev
);
6444 enable_irq(msix_irq
);
6447 msix_irq
= adapter
->msix_entries
[vector
].vector
;
6448 disable_irq(msix_irq
);
6449 e1000_msix_other(msix_irq
, netdev
);
6450 enable_irq(msix_irq
);
6458 * @netdev: network interface device structure
6460 * Polling 'interrupt' - used by things like netconsole to send skbs
6461 * without having to re-enable interrupts. It's not called while
6462 * the interrupt routine is executing.
6464 static void e1000_netpoll(struct net_device
*netdev
)
6466 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6468 switch (adapter
->int_mode
) {
6469 case E1000E_INT_MODE_MSIX
:
6470 e1000_intr_msix(adapter
->pdev
->irq
, netdev
);
6472 case E1000E_INT_MODE_MSI
:
6473 disable_irq(adapter
->pdev
->irq
);
6474 e1000_intr_msi(adapter
->pdev
->irq
, netdev
);
6475 enable_irq(adapter
->pdev
->irq
);
6477 default: /* E1000E_INT_MODE_LEGACY */
6478 disable_irq(adapter
->pdev
->irq
);
6479 e1000_intr(adapter
->pdev
->irq
, netdev
);
6480 enable_irq(adapter
->pdev
->irq
);
6487 * e1000_io_error_detected - called when PCI error is detected
6488 * @pdev: Pointer to PCI device
6489 * @state: The current pci connection state
6491 * This function is called after a PCI bus error affecting
6492 * this device has been detected.
6494 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
6495 pci_channel_state_t state
)
6497 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6498 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6500 netif_device_detach(netdev
);
6502 if (state
== pci_channel_io_perm_failure
)
6503 return PCI_ERS_RESULT_DISCONNECT
;
6505 if (netif_running(netdev
))
6506 e1000e_down(adapter
, true);
6507 pci_disable_device(pdev
);
6509 /* Request a slot slot reset. */
6510 return PCI_ERS_RESULT_NEED_RESET
;
6514 * e1000_io_slot_reset - called after the pci bus has been reset.
6515 * @pdev: Pointer to PCI device
6517 * Restart the card from scratch, as if from a cold-boot. Implementation
6518 * resembles the first-half of the e1000e_pm_resume routine.
6520 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
6522 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6523 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6524 struct e1000_hw
*hw
= &adapter
->hw
;
6525 u16 aspm_disable_flag
= 0;
6527 pci_ers_result_t result
;
6529 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6530 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6531 if (adapter
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6532 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6533 if (aspm_disable_flag
)
6534 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6536 err
= pci_enable_device_mem(pdev
);
6539 "Cannot re-enable PCI device after reset.\n");
6540 result
= PCI_ERS_RESULT_DISCONNECT
;
6542 pdev
->state_saved
= true;
6543 pci_restore_state(pdev
);
6544 pci_set_master(pdev
);
6546 pci_enable_wake(pdev
, PCI_D3hot
, 0);
6547 pci_enable_wake(pdev
, PCI_D3cold
, 0);
6549 e1000e_reset(adapter
);
6551 result
= PCI_ERS_RESULT_RECOVERED
;
6554 pci_cleanup_aer_uncorrect_error_status(pdev
);
6560 * e1000_io_resume - called when traffic can start flowing again.
6561 * @pdev: Pointer to PCI device
6563 * This callback is called when the error recovery driver tells us that
6564 * its OK to resume normal operation. Implementation resembles the
6565 * second-half of the e1000e_pm_resume routine.
6567 static void e1000_io_resume(struct pci_dev
*pdev
)
6569 struct net_device
*netdev
= pci_get_drvdata(pdev
);
6570 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6572 e1000_init_manageability_pt(adapter
);
6574 if (netif_running(netdev
)) {
6575 if (e1000e_up(adapter
)) {
6577 "can't bring device back up after reset\n");
6582 netif_device_attach(netdev
);
6584 /* If the controller has AMT, do not set DRV_LOAD until the interface
6585 * is up. For all other cases, let the f/w know that the h/w is now
6586 * under the control of the driver.
6588 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6589 e1000e_get_hw_control(adapter
);
6592 static void e1000_print_device_info(struct e1000_adapter
*adapter
)
6594 struct e1000_hw
*hw
= &adapter
->hw
;
6595 struct net_device
*netdev
= adapter
->netdev
;
6597 u8 pba_str
[E1000_PBANUM_LENGTH
];
6599 /* print bus type/speed/width info */
6600 e_info("(PCI Express:2.5GT/s:%s) %pM\n",
6602 ((hw
->bus
.width
== e1000_bus_width_pcie_x4
) ? "Width x4" :
6606 e_info("Intel(R) PRO/%s Network Connection\n",
6607 (hw
->phy
.type
== e1000_phy_ife
) ? "10/100" : "1000");
6608 ret_val
= e1000_read_pba_string_generic(hw
, pba_str
,
6609 E1000_PBANUM_LENGTH
);
6611 strlcpy((char *)pba_str
, "Unknown", sizeof(pba_str
));
6612 e_info("MAC: %d, PHY: %d, PBA No: %s\n",
6613 hw
->mac
.type
, hw
->phy
.type
, pba_str
);
6616 static void e1000_eeprom_checks(struct e1000_adapter
*adapter
)
6618 struct e1000_hw
*hw
= &adapter
->hw
;
6622 if (hw
->mac
.type
!= e1000_82573
)
6625 ret_val
= e1000_read_nvm(hw
, NVM_INIT_CONTROL2_REG
, 1, &buf
);
6627 if (!ret_val
&& (!(buf
& (1 << 0)))) {
6628 /* Deep Smart Power Down (DSPD) */
6629 dev_warn(&adapter
->pdev
->dev
,
6630 "Warning: detected DSPD enabled in EEPROM\n");
6634 static int e1000_set_features(struct net_device
*netdev
,
6635 netdev_features_t features
)
6637 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
6638 netdev_features_t changed
= features
^ netdev
->features
;
6640 if (changed
& (NETIF_F_TSO
| NETIF_F_TSO6
))
6641 adapter
->flags
|= FLAG_TSO_FORCE
;
6643 if (!(changed
& (NETIF_F_HW_VLAN_CTAG_RX
| NETIF_F_HW_VLAN_CTAG_TX
|
6644 NETIF_F_RXCSUM
| NETIF_F_RXHASH
| NETIF_F_RXFCS
|
6648 if (changed
& NETIF_F_RXFCS
) {
6649 if (features
& NETIF_F_RXFCS
) {
6650 adapter
->flags2
&= ~FLAG2_CRC_STRIPPING
;
6652 /* We need to take it back to defaults, which might mean
6653 * stripping is still disabled at the adapter level.
6655 if (adapter
->flags2
& FLAG2_DFLT_CRC_STRIPPING
)
6656 adapter
->flags2
|= FLAG2_CRC_STRIPPING
;
6658 adapter
->flags2
&= ~FLAG2_CRC_STRIPPING
;
6662 netdev
->features
= features
;
6664 if (netif_running(netdev
))
6665 e1000e_reinit_locked(adapter
);
6667 e1000e_reset(adapter
);
6672 static const struct net_device_ops e1000e_netdev_ops
= {
6673 .ndo_open
= e1000_open
,
6674 .ndo_stop
= e1000_close
,
6675 .ndo_start_xmit
= e1000_xmit_frame
,
6676 .ndo_get_stats64
= e1000e_get_stats64
,
6677 .ndo_set_rx_mode
= e1000e_set_rx_mode
,
6678 .ndo_set_mac_address
= e1000_set_mac
,
6679 .ndo_change_mtu
= e1000_change_mtu
,
6680 .ndo_do_ioctl
= e1000_ioctl
,
6681 .ndo_tx_timeout
= e1000_tx_timeout
,
6682 .ndo_validate_addr
= eth_validate_addr
,
6684 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
6685 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
6686 #ifdef CONFIG_NET_POLL_CONTROLLER
6687 .ndo_poll_controller
= e1000_netpoll
,
6689 .ndo_set_features
= e1000_set_features
,
6693 * e1000_probe - Device Initialization Routine
6694 * @pdev: PCI device information struct
6695 * @ent: entry in e1000_pci_tbl
6697 * Returns 0 on success, negative on failure
6699 * e1000_probe initializes an adapter identified by a pci_dev structure.
6700 * The OS initialization, configuring of the adapter private structure,
6701 * and a hardware reset occur.
6703 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
6705 struct net_device
*netdev
;
6706 struct e1000_adapter
*adapter
;
6707 struct e1000_hw
*hw
;
6708 const struct e1000_info
*ei
= e1000_info_tbl
[ent
->driver_data
];
6709 resource_size_t mmio_start
, mmio_len
;
6710 resource_size_t flash_start
, flash_len
;
6711 static int cards_found
;
6712 u16 aspm_disable_flag
= 0;
6713 int bars
, i
, err
, pci_using_dac
;
6714 u16 eeprom_data
= 0;
6715 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
6718 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L0S
)
6719 aspm_disable_flag
= PCIE_LINK_STATE_L0S
;
6720 if (ei
->flags2
& FLAG2_DISABLE_ASPM_L1
)
6721 aspm_disable_flag
|= PCIE_LINK_STATE_L1
;
6722 if (aspm_disable_flag
)
6723 e1000e_disable_aspm(pdev
, aspm_disable_flag
);
6725 err
= pci_enable_device_mem(pdev
);
6730 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(64));
6734 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(32));
6737 "No usable DMA configuration, aborting\n");
6742 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
);
6743 err
= pci_request_selected_regions_exclusive(pdev
, bars
,
6744 e1000e_driver_name
);
6748 /* AER (Advanced Error Reporting) hooks */
6749 pci_enable_pcie_error_reporting(pdev
);
6751 pci_set_master(pdev
);
6752 /* PCI config space info */
6753 err
= pci_save_state(pdev
);
6755 goto err_alloc_etherdev
;
6758 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
6760 goto err_alloc_etherdev
;
6762 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
6764 netdev
->irq
= pdev
->irq
;
6766 pci_set_drvdata(pdev
, netdev
);
6767 adapter
= netdev_priv(netdev
);
6769 adapter
->netdev
= netdev
;
6770 adapter
->pdev
= pdev
;
6772 adapter
->pba
= ei
->pba
;
6773 adapter
->flags
= ei
->flags
;
6774 adapter
->flags2
= ei
->flags2
;
6775 adapter
->hw
.adapter
= adapter
;
6776 adapter
->hw
.mac
.type
= ei
->mac
;
6777 adapter
->max_hw_frame_size
= ei
->max_hw_frame_size
;
6778 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
6780 mmio_start
= pci_resource_start(pdev
, 0);
6781 mmio_len
= pci_resource_len(pdev
, 0);
6784 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
6785 if (!adapter
->hw
.hw_addr
)
6788 if ((adapter
->flags
& FLAG_HAS_FLASH
) &&
6789 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
6790 flash_start
= pci_resource_start(pdev
, 1);
6791 flash_len
= pci_resource_len(pdev
, 1);
6792 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
6793 if (!adapter
->hw
.flash_address
)
6797 /* Set default EEE advertisement */
6798 if (adapter
->flags2
& FLAG2_HAS_EEE
)
6799 adapter
->eee_advert
= MDIO_EEE_100TX
| MDIO_EEE_1000T
;
6801 /* construct the net_device struct */
6802 netdev
->netdev_ops
= &e1000e_netdev_ops
;
6803 e1000e_set_ethtool_ops(netdev
);
6804 netdev
->watchdog_timeo
= 5 * HZ
;
6805 netif_napi_add(netdev
, &adapter
->napi
, e1000e_poll
, 64);
6806 strlcpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
));
6808 netdev
->mem_start
= mmio_start
;
6809 netdev
->mem_end
= mmio_start
+ mmio_len
;
6811 adapter
->bd_number
= cards_found
++;
6813 e1000e_check_options(adapter
);
6815 /* setup adapter struct */
6816 err
= e1000_sw_init(adapter
);
6820 memcpy(&hw
->mac
.ops
, ei
->mac_ops
, sizeof(hw
->mac
.ops
));
6821 memcpy(&hw
->nvm
.ops
, ei
->nvm_ops
, sizeof(hw
->nvm
.ops
));
6822 memcpy(&hw
->phy
.ops
, ei
->phy_ops
, sizeof(hw
->phy
.ops
));
6824 err
= ei
->get_variants(adapter
);
6828 if ((adapter
->flags
& FLAG_IS_ICH
) &&
6829 (adapter
->flags
& FLAG_READ_ONLY_NVM
))
6830 e1000e_write_protect_nvm_ich8lan(&adapter
->hw
);
6832 hw
->mac
.ops
.get_bus_info(&adapter
->hw
);
6834 adapter
->hw
.phy
.autoneg_wait_to_complete
= 0;
6836 /* Copper options */
6837 if (adapter
->hw
.phy
.media_type
== e1000_media_type_copper
) {
6838 adapter
->hw
.phy
.mdix
= AUTO_ALL_MODES
;
6839 adapter
->hw
.phy
.disable_polarity_correction
= 0;
6840 adapter
->hw
.phy
.ms_type
= e1000_ms_hw_default
;
6843 if (hw
->phy
.ops
.check_reset_block
&& hw
->phy
.ops
.check_reset_block(hw
))
6844 dev_info(&pdev
->dev
,
6845 "PHY reset is blocked due to SOL/IDER session.\n");
6847 /* Set initial default active device features */
6848 netdev
->features
= (NETIF_F_SG
|
6849 NETIF_F_HW_VLAN_CTAG_RX
|
6850 NETIF_F_HW_VLAN_CTAG_TX
|
6857 /* Set user-changeable features (subset of all device features) */
6858 netdev
->hw_features
= netdev
->features
;
6859 netdev
->hw_features
|= NETIF_F_RXFCS
;
6860 netdev
->priv_flags
|= IFF_SUPP_NOFCS
;
6861 netdev
->hw_features
|= NETIF_F_RXALL
;
6863 if (adapter
->flags
& FLAG_HAS_HW_VLAN_FILTER
)
6864 netdev
->features
|= NETIF_F_HW_VLAN_CTAG_FILTER
;
6866 netdev
->vlan_features
|= (NETIF_F_SG
|
6871 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
6873 if (pci_using_dac
) {
6874 netdev
->features
|= NETIF_F_HIGHDMA
;
6875 netdev
->vlan_features
|= NETIF_F_HIGHDMA
;
6878 if (e1000e_enable_mng_pass_thru(&adapter
->hw
))
6879 adapter
->flags
|= FLAG_MNG_PT_ENABLED
;
6881 /* before reading the NVM, reset the controller to
6882 * put the device in a known good starting state
6884 adapter
->hw
.mac
.ops
.reset_hw(&adapter
->hw
);
6886 /* systems with ASPM and others may see the checksum fail on the first
6887 * attempt. Let's give it a few tries
6890 if (e1000_validate_nvm_checksum(&adapter
->hw
) >= 0)
6893 dev_err(&pdev
->dev
, "The NVM Checksum Is Not Valid\n");
6899 e1000_eeprom_checks(adapter
);
6901 /* copy the MAC address */
6902 if (e1000e_read_mac_addr(&adapter
->hw
))
6904 "NVM Read Error while reading MAC address\n");
6906 memcpy(netdev
->dev_addr
, adapter
->hw
.mac
.addr
, netdev
->addr_len
);
6908 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
6909 dev_err(&pdev
->dev
, "Invalid MAC Address: %pM\n",
6915 init_timer(&adapter
->watchdog_timer
);
6916 adapter
->watchdog_timer
.function
= e1000_watchdog
;
6917 adapter
->watchdog_timer
.data
= (unsigned long)adapter
;
6919 init_timer(&adapter
->phy_info_timer
);
6920 adapter
->phy_info_timer
.function
= e1000_update_phy_info
;
6921 adapter
->phy_info_timer
.data
= (unsigned long)adapter
;
6923 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
6924 INIT_WORK(&adapter
->watchdog_task
, e1000_watchdog_task
);
6925 INIT_WORK(&adapter
->downshift_task
, e1000e_downshift_workaround
);
6926 INIT_WORK(&adapter
->update_phy_task
, e1000e_update_phy_task
);
6927 INIT_WORK(&adapter
->print_hang_task
, e1000_print_hw_hang
);
6929 /* Initialize link parameters. User can change them with ethtool */
6930 adapter
->hw
.mac
.autoneg
= 1;
6931 adapter
->fc_autoneg
= true;
6932 adapter
->hw
.fc
.requested_mode
= e1000_fc_default
;
6933 adapter
->hw
.fc
.current_mode
= e1000_fc_default
;
6934 adapter
->hw
.phy
.autoneg_advertised
= 0x2f;
6936 /* Initial Wake on LAN setting - If APM wake is enabled in
6937 * the EEPROM, enable the ACPI Magic Packet filter
6939 if (adapter
->flags
& FLAG_APME_IN_WUC
) {
6940 /* APME bit in EEPROM is mapped to WUC.APME */
6941 eeprom_data
= er32(WUC
);
6942 eeprom_apme_mask
= E1000_WUC_APME
;
6943 if ((hw
->mac
.type
> e1000_ich10lan
) &&
6944 (eeprom_data
& E1000_WUC_PHY_WAKE
))
6945 adapter
->flags2
|= FLAG2_HAS_PHY_WAKEUP
;
6946 } else if (adapter
->flags
& FLAG_APME_IN_CTRL3
) {
6947 if (adapter
->flags
& FLAG_APME_CHECK_PORT_B
&&
6948 (adapter
->hw
.bus
.func
== 1))
6949 rval
= e1000_read_nvm(&adapter
->hw
,
6950 NVM_INIT_CONTROL3_PORT_B
,
6953 rval
= e1000_read_nvm(&adapter
->hw
,
6954 NVM_INIT_CONTROL3_PORT_A
,
6958 /* fetch WoL from EEPROM */
6960 e_dbg("NVM read error getting WoL initial values: %d\n", rval
);
6961 else if (eeprom_data
& eeprom_apme_mask
)
6962 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
6964 /* now that we have the eeprom settings, apply the special cases
6965 * where the eeprom may be wrong or the board simply won't support
6966 * wake on lan on a particular port
6968 if (!(adapter
->flags
& FLAG_HAS_WOL
))
6969 adapter
->eeprom_wol
= 0;
6971 /* initialize the wol settings based on the eeprom settings */
6972 adapter
->wol
= adapter
->eeprom_wol
;
6974 /* make sure adapter isn't asleep if manageability is enabled */
6975 if (adapter
->wol
|| (adapter
->flags
& FLAG_MNG_PT_ENABLED
) ||
6976 (hw
->mac
.ops
.check_mng_mode(hw
)))
6977 device_wakeup_enable(&pdev
->dev
);
6979 /* save off EEPROM version number */
6980 rval
= e1000_read_nvm(&adapter
->hw
, 5, 1, &adapter
->eeprom_vers
);
6983 e_dbg("NVM read error getting EEPROM version: %d\n", rval
);
6984 adapter
->eeprom_vers
= 0;
6987 /* reset the hardware with the new settings */
6988 e1000e_reset(adapter
);
6990 /* If the controller has AMT, do not set DRV_LOAD until the interface
6991 * is up. For all other cases, let the f/w know that the h/w is now
6992 * under the control of the driver.
6994 if (!(adapter
->flags
& FLAG_HAS_AMT
))
6995 e1000e_get_hw_control(adapter
);
6997 strlcpy(netdev
->name
, "eth%d", sizeof(netdev
->name
));
6998 err
= register_netdev(netdev
);
7002 /* carrier off reporting is important to ethtool even BEFORE open */
7003 netif_carrier_off(netdev
);
7005 /* init PTP hardware clock */
7006 e1000e_ptp_init(adapter
);
7008 e1000_print_device_info(adapter
);
7010 if (pci_dev_run_wake(pdev
))
7011 pm_runtime_put_noidle(&pdev
->dev
);
7016 if (!(adapter
->flags
& FLAG_HAS_AMT
))
7017 e1000e_release_hw_control(adapter
);
7019 if (hw
->phy
.ops
.check_reset_block
&& !hw
->phy
.ops
.check_reset_block(hw
))
7020 e1000_phy_hw_reset(&adapter
->hw
);
7022 kfree(adapter
->tx_ring
);
7023 kfree(adapter
->rx_ring
);
7025 if (adapter
->hw
.flash_address
)
7026 iounmap(adapter
->hw
.flash_address
);
7027 e1000e_reset_interrupt_capability(adapter
);
7029 iounmap(adapter
->hw
.hw_addr
);
7031 free_netdev(netdev
);
7033 pci_release_selected_regions(pdev
,
7034 pci_select_bars(pdev
, IORESOURCE_MEM
));
7037 pci_disable_device(pdev
);
7042 * e1000_remove - Device Removal Routine
7043 * @pdev: PCI device information struct
7045 * e1000_remove is called by the PCI subsystem to alert the driver
7046 * that it should release a PCI device. The could be caused by a
7047 * Hot-Plug event, or because the driver is going to be removed from
7050 static void e1000_remove(struct pci_dev
*pdev
)
7052 struct net_device
*netdev
= pci_get_drvdata(pdev
);
7053 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
7054 bool down
= test_bit(__E1000_DOWN
, &adapter
->state
);
7056 e1000e_ptp_remove(adapter
);
7058 /* The timers may be rescheduled, so explicitly disable them
7059 * from being rescheduled.
7062 set_bit(__E1000_DOWN
, &adapter
->state
);
7063 del_timer_sync(&adapter
->watchdog_timer
);
7064 del_timer_sync(&adapter
->phy_info_timer
);
7066 cancel_work_sync(&adapter
->reset_task
);
7067 cancel_work_sync(&adapter
->watchdog_task
);
7068 cancel_work_sync(&adapter
->downshift_task
);
7069 cancel_work_sync(&adapter
->update_phy_task
);
7070 cancel_work_sync(&adapter
->print_hang_task
);
7072 if (adapter
->flags
& FLAG_HAS_HW_TIMESTAMP
) {
7073 cancel_work_sync(&adapter
->tx_hwtstamp_work
);
7074 if (adapter
->tx_hwtstamp_skb
) {
7075 dev_kfree_skb_any(adapter
->tx_hwtstamp_skb
);
7076 adapter
->tx_hwtstamp_skb
= NULL
;
7080 /* Don't lie to e1000_close() down the road. */
7082 clear_bit(__E1000_DOWN
, &adapter
->state
);
7083 unregister_netdev(netdev
);
7085 if (pci_dev_run_wake(pdev
))
7086 pm_runtime_get_noresume(&pdev
->dev
);
7088 /* Release control of h/w to f/w. If f/w is AMT enabled, this
7089 * would have already happened in close and is redundant.
7091 e1000e_release_hw_control(adapter
);
7093 e1000e_reset_interrupt_capability(adapter
);
7094 kfree(adapter
->tx_ring
);
7095 kfree(adapter
->rx_ring
);
7097 iounmap(adapter
->hw
.hw_addr
);
7098 if (adapter
->hw
.flash_address
)
7099 iounmap(adapter
->hw
.flash_address
);
7100 pci_release_selected_regions(pdev
,
7101 pci_select_bars(pdev
, IORESOURCE_MEM
));
7103 free_netdev(netdev
);
7106 pci_disable_pcie_error_reporting(pdev
);
7108 pci_disable_device(pdev
);
7111 /* PCI Error Recovery (ERS) */
7112 static const struct pci_error_handlers e1000_err_handler
= {
7113 .error_detected
= e1000_io_error_detected
,
7114 .slot_reset
= e1000_io_slot_reset
,
7115 .resume
= e1000_io_resume
,
7118 static const struct pci_device_id e1000_pci_tbl
[] = {
7119 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_COPPER
), board_82571
},
7120 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_FIBER
), board_82571
},
7121 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER
), board_82571
},
7122 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_COPPER_LP
),
7124 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_QUAD_FIBER
), board_82571
},
7125 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES
), board_82571
},
7126 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_DUAL
), board_82571
},
7127 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571EB_SERDES_QUAD
), board_82571
},
7128 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82571PT_QUAD_COPPER
), board_82571
},
7130 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI
), board_82572
},
7131 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_COPPER
), board_82572
},
7132 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_FIBER
), board_82572
},
7133 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82572EI_SERDES
), board_82572
},
7135 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E
), board_82573
},
7136 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573E_IAMT
), board_82573
},
7137 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82573L
), board_82573
},
7139 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574L
), board_82574
},
7140 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82574LA
), board_82574
},
7141 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_82583V
), board_82583
},
7143 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_DPT
),
7144 board_80003es2lan
},
7145 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_COPPER_SPT
),
7146 board_80003es2lan
},
7147 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_DPT
),
7148 board_80003es2lan
},
7149 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_80003ES2LAN_SERDES_SPT
),
7150 board_80003es2lan
},
7152 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE
), board_ich8lan
},
7153 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_G
), board_ich8lan
},
7154 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IFE_GT
), board_ich8lan
},
7155 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_AMT
), board_ich8lan
},
7156 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_C
), board_ich8lan
},
7157 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M
), board_ich8lan
},
7158 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_IGP_M_AMT
), board_ich8lan
},
7159 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH8_82567V_3
), board_ich8lan
},
7161 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE
), board_ich9lan
},
7162 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_G
), board_ich9lan
},
7163 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IFE_GT
), board_ich9lan
},
7164 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_AMT
), board_ich9lan
},
7165 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_C
), board_ich9lan
},
7166 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_BM
), board_ich9lan
},
7167 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M
), board_ich9lan
},
7168 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_AMT
), board_ich9lan
},
7169 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH9_IGP_M_V
), board_ich9lan
},
7171 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LM
), board_ich9lan
},
7172 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_LF
), board_ich9lan
},
7173 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_R_BM_V
), board_ich9lan
},
7175 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LM
), board_ich10lan
},
7176 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_LF
), board_ich10lan
},
7177 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_ICH10_D_BM_V
), board_ich10lan
},
7179 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LM
), board_pchlan
},
7180 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_M_HV_LC
), board_pchlan
},
7181 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DM
), board_pchlan
},
7182 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_D_HV_DC
), board_pchlan
},
7184 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_LM
), board_pch2lan
},
7185 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH2_LV_V
), board_pch2lan
},
7187 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPT_I217_LM
), board_pch_lpt
},
7188 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPT_I217_V
), board_pch_lpt
},
7189 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPTLP_I218_LM
), board_pch_lpt
},
7190 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_LPTLP_I218_V
), board_pch_lpt
},
7191 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_LM2
), board_pch_lpt
},
7192 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_V2
), board_pch_lpt
},
7193 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_LM3
), board_pch_lpt
},
7194 { PCI_VDEVICE(INTEL
, E1000_DEV_ID_PCH_I218_V3
), board_pch_lpt
},
7196 { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */
7198 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
7200 static const struct dev_pm_ops e1000_pm_ops
= {
7201 #ifdef CONFIG_PM_SLEEP
7202 .suspend
= e1000e_pm_suspend
,
7203 .resume
= e1000e_pm_resume
,
7204 .freeze
= e1000e_pm_freeze
,
7205 .thaw
= e1000e_pm_thaw
,
7206 .poweroff
= e1000e_pm_suspend
,
7207 .restore
= e1000e_pm_resume
,
7209 SET_RUNTIME_PM_OPS(e1000e_pm_runtime_suspend
, e1000e_pm_runtime_resume
,
7210 e1000e_pm_runtime_idle
)
7213 /* PCI Device API Driver */
7214 static struct pci_driver e1000_driver
= {
7215 .name
= e1000e_driver_name
,
7216 .id_table
= e1000_pci_tbl
,
7217 .probe
= e1000_probe
,
7218 .remove
= e1000_remove
,
7220 .pm
= &e1000_pm_ops
,
7222 .shutdown
= e1000_shutdown
,
7223 .err_handler
= &e1000_err_handler
7227 * e1000_init_module - Driver Registration Routine
7229 * e1000_init_module is the first routine called when the driver is
7230 * loaded. All it does is register with the PCI subsystem.
7232 static int __init
e1000_init_module(void)
7236 pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
7237 e1000e_driver_version
);
7238 pr_info("Copyright(c) 1999 - 2014 Intel Corporation.\n");
7239 ret
= pci_register_driver(&e1000_driver
);
7243 module_init(e1000_init_module
);
7246 * e1000_exit_module - Driver Exit Cleanup Routine
7248 * e1000_exit_module is called just before the driver is removed
7251 static void __exit
e1000_exit_module(void)
7253 pci_unregister_driver(&e1000_driver
);
7255 module_exit(e1000_exit_module
);
7257 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
7258 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
7259 MODULE_LICENSE("GPL");
7260 MODULE_VERSION(DRV_VERSION
);